Watercolor Artist’s Color and Value Wheels

I’ve been making these wheels, marking in the paints in the specific brands that I have, using the ones created by Bruce MacEvoy at Handprint.com as reference. I think for me, paint mixing will be much more efficient with these in plain sight. The color wheel on the right shows the most lightfast watercolor pigments available arranged according to hue angle. The coolest yellows are at 90degrees like cadmium lemon PY 97 and green gold PY 129, moving clockwise from there, are the warmer yellows like azo yellow PY 150 and gamboge PY 153. The unsaturated yellows lie within the wheel, the closer to the center point of the circle, the more unsaturated they are. These are the iron oxides like raw sienna, raw umber, burnt sienna, burnt umber etc PBr7, PBr 11 ..along with a variety of mixtures. Then we move onto the oranges like pyrrol orange PO 73 and red oranges like pyrrol scarlet PO 255 which are the most saturated pigments we have available right now. Maimeri burnt umber is an unsaturated red orange. Then come the reds like the cadmiums and quin reds PR 108 and PR 209. PR 179 perylene maroon is a beautiful unsaturated red. Quin magenta and quin violet PR 122 and PV 19 are saturated and unsaturated hues of magenta lying at 360 degrees. Cobalt violet and manganese violet PV 14 and PV 16 are saturated and unsaturated versions of the red violet hue at 330 degrees. Ultramarine violet PV 15 red shade is a violet at 300. I have a violet blue which is marketed as smalt by WinsorNewton at 270 degrees. There are not that many lightfast pigments available in this region, I have yet to acquire a nice, juicy good saturated violet. The red blue like ultramarine blue PB 29 comes next, then a true blue like cobalt blue PB 28 which comes close to the color of the sky , greener blues like pthalo blue PB 15:3 and the ceruleans PB 36, PG 50 from 240 to 200. The blue shade of pthalo green PG7 is at 180. M grahams permanent green light is yellower and Daniel Smiths sap green is an unsaturated yellow green close to the color of foliage. PBk 31 , perylene black is a very dull greenish black. This brings us back to the yellows. The paints with the same pigments can be marketed under different names so its best to look at the pigment numbers when purchasing them. The hues can vary slightly across brands depending on the manufacturing process. Hope this clears up some confusion about warm and cool colors. If we take yellow as the warmest hue then the hues containing it as the undertone are warm. The hue directly opposite this then, voilet blue , is the coolest. Some artists like to take the orange and blue green axis as the warm cool axis.

Artist's color and value wheel

Artist’s value and color wheel

Watercolor pigments arranged warm to cool and back

Watercolor pigments arranged warm to cool and back

The value wheel shows the lightness of the same pigments, the scale also corresponding to the Munsell charts. The yellows at their optimal color are the lightest at a value of 9 and 8, the oranges and teals at 7 and 6 , reds and greens at 5, magentas and violets at 4 and the blues are at 3. Carbon black comes only to about a 2 and does not reach a true black at 0.

Here are the wheels that have been developed by Bruce MacEvoy who has been kind enough to share them on his website:

High quality pdf versions :
Artist’s color wheel
Artist’s value wheel




Atmospheres … and Color swatches

Sketch - Atmospheric , night sky Sketch - Atmospheric

Doing these reminded me of some some color cards I made a while back, as suggested by Nita Leland in her book. I started off with the usual color schemes, complementary , triads, tetrads etc., and keep adding to them whenever I find something new. Notes can be written at the back, of the colors used etc. Its a useful and fun exercise, it makes you think of hue/value combinations and keeps your eye sensitive to colors outside. And of course, serve as references for future projects and paintings.

Color cards

An understanding into Warm and Cool colors


Generally speaking, the colors, red, yellow and orange are called warm colors and the colors blue, green and violet are called cool colors. But it is important to realise that these terms are just a way of describing the colors and cannot be quantified, like, say the other properties: value (lightness/darkness) and chromaticity (saturation). So, it is not necessary to enter into the questions of which is the warmest or which is the coolest of colors etc. which no one is agreed upon anyway. n fact, it is easier to think of colors as how much of each of the three hues, red, yellow and blue they contain rather than to think of them as warm or cool; but when conveying or describing them, I think the warm-cool concept is easier]. These terms are not absolute and make real sense only when talked of in a relative way. For e.g Schminke´s Ruby Red is (called) cooler than a Winsor and Newton´s Winsor Red but both reds are warm compared to any blue. You can have a warm and a cool yellow but both yellows are (called) warmer than any blue. Greens can be called warmer than blue because greens have yellow in them.

A color that has more of red (or yellow) is said to warmer than a color which has more of blue. For e.g a Schminke´s Indian Yellow or a Daniel Smith´s New Gamboge both have a tiny amount of red in them and are called warmer than say, a Winsor and Newton Winsor Yellow. A very cool yellow has a tiny amount of blue, which gives the cool yellows a greenish tinge. An example of this would be Schminke´s Auerolin yellow.

The reason why this concept is important is because it is a valuable aid in color mixing. If you want a pure, high chroma mix, then you should mix colors that do not have the opposite color in them (which would naturally dull the resulting mix). A cool red, for e.g has a small amount of blue, therefore it would not be a good idea to add this to a yellow, if you wanted a saturated orange. However, you can do so if you wanted a rusty kind of orange. A warm red plus a warm yellow gives a clear orange. A warm blue (ultramarine blue) and a cool red will give a clear violet. A cool blue (phthalo blue) and a cool yellow will give a clear green.

All this, I have gone into detail in my article Choosing your colors – Color Wheels; I just thought I would clarify it once more before I jump into what I really wanted to write about here: Do warm colors really advance and cool colors recede? ….when we think of reds and oranges we tend to think of high chroma, saturated reds or oranges and we know that objects at a distance start looking bluer and grayer, so it sounds logically right. Warm colors are more attention grabbing, therefore they seem to advance more than cool colors which seem to recede. However, though warm, saturated colors are attention grabbing; if you think of unsaturated warm colors they definitely do not attract more than saturated, cool colors. Compare a mustard yellow or a raw sienna with a medium valued phthalo blue. The mustard yellow seems to recede more than the blue because the blue is so intense. Similarly compare a dull red, like a maroon with a fresh spring green. Definitely, one cannot say that the maroon attracts more than the green. Therefore, it is not strictly true that warm colors advance and cool colors recede. Here´s a study where the results of tests conducted were inconclusive, red patches tended to advance but the same cannot be said for irregularly shaped red objects: The real effect of warm-cool colors: Washington University in St. Louis(2006)

The problem with having such preconceived notions is that it becomes crippling, we limit ourselves even at the planning stage of the painting to fewer possibilities. For a long time now, I had been thinking that it is not warm colors that seem to advance but high- chroma colors that seem to advance, because highly saturated colors are the ones that attract our attention the first. But I have had to revise my opinion on that too. I feel that an artist can make saturated or high chroma colors appear to advance in other ways like with high-detail, high-contrast etc but they do not automatically do so just by virtue of their being high-chroma. Consider, for e.g., this beautiful painting by Frederic Edwin Church, an American landscape painter of the 19th century:

Setting Sun by Frederic Edwin church

Setting Sun by Frederic Edwin church

The colors around the sun are both warm and high chroma, yet the area does not advance unnaturally; it does attract the most attention, therefore it is used very effectively as the focal point and the reflection on the water as a path towards it. Definitely, it does look at a good distance beyond the foreground with the track and man walking, the trees catching the light delicately, the flying birds and the waters.

Here´s another painting by him, the River of Light/ Morning in the Tropics (oil on canvas), mesmerising even in its tranquility:

Morning in the tropics by Frederic Edwin Church

Morning in the tropics by Frederic Edwin Church

There are no predominantly warm colors in the background here, but it is of a higher chroma than the foreground, yet he has been successful in creating a marvellous amount of depth and distance (which is so necessary in landscape painting) in this work. Two, red-colored birds perched on a palm tree, which catches the light ever so beautifully, a red-flowering bromeliad on the path of brambles leading up to the roots of aged and gnarled trees form the exquisitely detailed foreground, the mid ground is formed by the slightly hazy trees and the white flock of birds just above the waters and beyond that are amorphous shapes for trees at the horizon.

In fact, you can find many paintings of sunrises and sunsets which have warm colors in the background and which work beautifully. Here´s one by Thomas Moran, an American painter from England, called Sunset at Sea; cool, blue-green-gray crashing waves form the foreground and the warm, golden setting sun and swirling clouds and skies form the background:

Sunset at Sea by Thomas Moran

Sunset at Sea by Thomas Moran


And finally to wind up, here´s one more of Frederic Edwin Church, Icebergs, which is really a very interesting piece of work:

The Icebergs by Frederic Edwin Church

The Icebergs by Frederic Edwin Church

The foreground is quite cool, blue and bluish white, the shape of the iceberg leads the eye towards the midground which is quite warm, compared to the foreground, a beautiful green-blue which forms the focal point, the iceberg and the background behind that gets warmer(!) they have has touches of orange in it. So, the painting gets warmer as it recedes, yet works beautifully. … It just makes me realize again how important it is to keep the mind free from strict rules.


Tetrads and other schemes


             Tetradic color schemes have a rectangular or quadratic relationship amongst the chosen colors. These schemes are quite lavish for now you have four colors to play around with but a little care must be taken in design to unite all of them together into a harmonious whole.


                  The split complementary tetrad (white and red rectangles in the above wheel form two examples) consists of two colors one space apart from each other and both their complements. In the white rectangle, the complements of red and orange are green and blue, so the scheme consists of red, orange, green and blue. These two pairs lie, naturally, on opposite sides of the wheel, one pair being warm and the other cool. Make one, either the warm or cool pair more dominant than the other. This can be done by using more of  one in terms of area but also in other ways…. e.g pure, strident hues (they stand out) against subdued or grayed colors or using hue or value contrast. 

               The adjacent complementary (yellow rectangle in the wheel above) tetrad consists of two adjacent colors along with their complements. This gives the most harmonious results amongst the three tetradic schemes because of the colors lying next to each other but still gives some movement  (some zing!) as compared to the analogous scheme because it includes colors lying on the opposite side of the wheel.  In this painting “whispers”, I`ve used red, red-violet, green and yellow-green (though the red is a cool red, schminke magenta).


                  The square tetrad or the cross complementary tetrad (the small violet square in the color wheel) consists of four colors equidistant on the color wheel, each spaced two colors apart from each other. Again, these are two pairs of complements. This forms the most striking and dynamic of all schemes as the colors are, so to say, thrown as far apart as possible from each other. In this example, I`ve used red-orange, yellow, blue-green and violet.


               Apart from these there are other color schemes like

Monochromatic scheme – This scheme uses only one hue in its different values i.e. in all its tints, tones and shades.

Achromatic  scheme – An example would be artwork done in graphite. It is called achromatic because it is not in color. Adding slight hints of colors gives some variations to this theme.

Neutral scheme – consists of neutral or near neutral hues like browns, beiges, grays..



         A triadic color scheme consists of three colors having a triangular relationship on the color wheel.


              The basic triads are the primary, secondary and tertiary triads. They are evenly spaced around the wheel 3 colors apart from each other. The primary triad (violet triangle in the above photo) consists of red, yellow and blue; this along with the secondary triad (in their high chromas) is a favourite for children`s books, toys and rooms. It is a happy and colorful theme. A white background or white walls help bring these various, saturated colors together so that they donot clash. 


                 A white background always gives a fresh (sometimes crisp) look to a painting. In the botanical paintings of Redoute` `s  old world  roses (Leafy white rose of Fleury, Unique Blanche rose for e.g) the white background really helps to bring out the delicate, fragile beauty of the petals. A black or dark background, on the other hand can be made dramatic or sombre and pensive.

                 I`ve done these from a chinese painting book a very long time back. It is an art form in itself but also is a fun way for practicing your brushstrokes.   


                     The yellow triangle on the color wheel is an example of what is called the modified triad. They are spaced one color apart. It gives a little more contrast than the anaologous color scheme. Here is another example in which the blue-green-violet make a lovely combination:


                  A complementary triad consists of a complementary pair and the color halway in between them. The white triangle is an example. Another is yellow, violet and red-orange.

                The split complimentary triad consists of a color and the two colors adjacent to its complementary. The red triangle in the wheel forms an example.


Complementary and Split Complementaries



            A complementary color scheme (indicated by the blue line on the chart) consists of hues that are opposite on the hue wheel. For e.g:  yellow and violet, blue and orange, blue-green and red-orange… you can make six pairs this way. They are farthest apart on the wheel and create dynamic contrast. Their temperatures will be opposite. When viewed next to each other, they enhance each other and create a vibratory effect. This scheme needs to be used with some care, else it can look a bit jarring. Try making one hue more dominant than the other to create harmony. The two hues used in tints, tones and shades as well as a combination of themselves and with neutrals can make an array of colors and need not be limiting. 

            A split- complementary color scheme consists of a hue and hues on either side of the complement, excluding the complement itself. For e.g: red, blue-green and yellow-green or blue, red-orange and yellow-orange or blue-violet, orange and yellow.

           An analogous-complementary scheme (indicated by the orange line on the chart) consists of three analogous hues and the hue opposite it. For e.g: Red with blue-green,green and yellow-green. Use the complement as an accent color rather than let both sides of the wheel vie for attention.

           The split and analogous complementary schemes are often times more pleasing than a pure complementary scheme.

             In nature, you can see these sets in the pale-yellow deep-violet of some iris or sunset skies; blue orange in bird-of-paradise or autumn maple leaves against a blue sky; pale red-violet pale yellow-green of young ornamental cabbage… Red-green is very common in nature, I`ve used it here in this painting of Geraniums. Raw sienna is the almost neutral accent color, though its not seen in the photo.


             Here, I`ve made an abstract using blue-violet,violet,red-violet and yellow:

the cool colors..


         Blue is a masculine hue and is the darkest of all hues, it has reserves of strength, but the energy is static and oppposite to the dynamic energy of red. It projects authority, responsibility, grace of strength, dignity. It is calming and induces meditation. Blue mixed with the active energy of red forms violet which is a spiritual hue representing the Third eye. Blue-violet, has less of the red and stands for intuition. Red-violet gives inspiration.

       Green is the color of nature, of eternal spring. It is restful to the eye and is both a warm and cool color. Blue-green is the most healing of all colors.

      Pale blue is a restful color, ideal for bedrooms. Mauve is a tone of violet; it is reserved and retiring and can be used in a subdued color scheme.


             Painting made from the the three analogous colors – yellow-green, green and blue-green 

Analogous color schemes – warm colors


                 Color plays an important role in most visual arts, graphic design, interior decor, clothing, packaging…… almost in every area of our life. Knowledge of color will help you in making the right choices for expressing yourself and making a statement with your artwork. Each hue has a symbolic meaning and evokes an emotional response in us, so it follows that different combinations of hues can be made to express subtly or dramatically varied nuances of emotions. 

                 Red stands for energy, courage, passion, drive, power and is attention grabbing. If a bold effect is what you are after, then make red your dominant color.  Yellow denotes openness, optimism, hope, happiness, sincerity, honesty, energy. It stimulates the intellect and communication. It is the lightest of all hues, yet in its high chroma form it attracts the most attention and advances towards the viewer. Orange combines the passion of red with the openness of yellow making this a warm and friendly hue. It has outgoing, sociable qualities to it.

               Red-Orange combines the energy and passion of red with a hint of the joy and openness of yellow making it an exuberant color that exudes innocent youth. Yellow-Orange on the other hand, combines the  honest, open and communicative nature of yellow with just a hint of the energy of the red to make it a welcoming hue. Orange again has more of red, so is more outgoing and sociable.

                White speaks of innocence, purity, peace and truth. Black has a grounding quality to it.

                 Here`s the RYB color wheel again where I have marked the primary (R,Y,B); secondary (O,G,V) and tertiary (RO,YO,YG,BG,BV,RV) colors. Lets begin our color odyssey with one of the basic color schemes – an analogous color scheme. Any three or four adjacent hues on the color wheel make up the analogous hues. For example, violet, red-violet and red. Analogous colors have a harmonious and pleasing effect on the eye. 


                  Here I`ve used reds, red-oranges, orange and yellow orange in their high chroma form. It makes a bold and striking statement with the addition of black. Doing this small demo inspired me to make an abstract painting out of it. Adding gold accents to it gives it a different, rich look. (photo below this one)   



                  This one is made from magenta, red-violets, violets and a bit of blue-violet. It looks more subdued because of the darker values that blue brings. 


                 Pink is a tint of cool red (a tint of a warm red tends towards a peachy color not a pink). Red, when combined with the peaceful effect of white, is calmed down, becomes sweeter. It is definitely what can be called a feminine color and is the basis of a romantic color scheme. You can combine different strengths of pinks with white or soft violets. Pale yellows and green-yellows can be be used for accent. In fact, any color next to pink works well for romantic as along as they are of very light values.



              Peach is the pale, lovely tint of orange. It is calm and has an air of understated elegance, without any reserve to it.


                A pale yellow is central to an elegant color scheme. It has some restraint to it (unlike peach) because it does not have any red in it. It has expansive qualities to it – a room with walls painted in this hue will appear larger than a room with walls painted in red. A living room with pale yellows, creams and the softest of beiges projects restraint, elegance, clarity, grace, intelligence and ease. In places where a white would seem too striking a contrast, a pale yellow would fit right in, also imparting a warmth and softness. You would barely notice the color but it gives a subtle glow to a painting or a room.  



               At the opposite end, these hues enriched with black project different qualities. Deep reds, maroons, mustard yellows and earthy orange browns are richer and more laid back than the strident pure hues. In painting, these are very useful for intensity contrast. Adding neutral colors like grays and beiges expands this palette even more. They serve as a place of rest for the eye in between other pure colors, be it in art or interior decor. 

              I`ll go into the cooler colors in another post, until then, be creative and have fun!

Choosing your colors – Color Wheels


            I find that a combination of alternate study and pratice is very effective when you are learning something. When you practice (paint), you come across some things that you donot understand and they are like small tensions in your mind, later you stop practicing and do some study ,research like going through art books or observing nature or doing little exercises such as value or color mixing charts for example, you open up your mind and let new things flow in and you will start stumbling upon the answers to what ever blocks you might have had….more research than required and you might end up whiling away your time! Back to practicing then…..

           I`ve made these color wheels with some of the colors that I have just so that I can see at a glance the mixes that are produced and not so much to use them as palette on their own:


                     In the RYB color model, the three primaries are Red, Yellow and Blue which when mixed in pairs make the three secondaries:

 Orange (red and yellow),

 Green (yellow and blue) and

 Violet (blue and red).

         These secondaries, then mixed with the primaries form the tertiary colors –

Red- Orange (Red mixed with Orange)

Yellow-Orange (Yellow mixed with Orange)

Yellow-Green (Yellow mixed with Green)

Blue-Green (Blue mixed with Green)

Blue-Violet (Blue mixed with Violet) and

Red-Violet (Red mixed with Violet)

           The more modern color theory proves that you get better mixes with the CYM model (refer to the 4th color wheel) where the three primaries are Cyan, Yellow and Magenta which when mixed in pairs result in the three secondaries:

Red-Orange (Magenta and Yellow)

Green (Cyan and Yellow)

Blue-Violet (Magenta and Cyan)

        These secondaries, when mixed with the primaries form the tertiary colors –

Red (Magenta mixed with Red Orange)

Yellow-Orange (Yellow mixed with Red Orange)

Yellow-Green (Yellow mixed with Green)

Blue-Green (Blue mixed with Green)

Blue (Cyan mixed with Blue-Violet) and

Violet (Magenta mixed with Blue-Violet)

             When you buy your paints, choose according to what pigments the paint contains rather than accoding to the name of the paint. The pigment name is indicative of a particular hue and not its marketing name. For e.g, The red in color wheel 1 is named ruby red by Schminke which has a pigment PV 19 (gamma quinacridone). The red in color wheel 5 is also PV 19 but is named Rose Lake by its manufacturer MaimeriBlu. Sometimes there might be a difference in hue between two paints even when the pigment in them is the same depending upon how it is manufactured. Paints that contain more than two pigments might result in muddy mixes.             

           To make clear mixes, you should mix those colors that already have the resulting color in them. For e.g if you want a clean violet, choose a warm blue like ultramarine blue (which already has a bit of violet in it) and a cool red like ruby red (which also has a bit of violet in it). To make a clean orange, choose a warm red like winsor red (which has orange) and a warm yellow. For foliage, you donot need clean green mixes, they would look artificial (for e.g DS Hansa Yellow Medium and MG Pthalo blue) and you would have to dull them down with a red.

           Even if you`re careful with your mixes, the secondary colors that you get by mixing these primaries will not have a high chroma, i.e they will not be as intense as the secondaries that you can get from the tube. Usually this might not be so important, like in a landscape scene for example but if you`re painting flowers, you do need those saturated colors.

        To make the color wheels, draw a few circles each with 12 equal spokes. Paint your three primaries so that there are three empty spokes in between the pairs.  The middle spoke in these three empty spokes is filled with the secondary color and the ones on either side of it have the tertiaries. Fill your brush with a nice and juicy almost full- valued color and paint a band at the widest part of the spoke. Dip the tip of the brush in clear water and paint this diluted color as a band in the middle area, stroke upwards gently to blend the two bands so that there is a gradation of values. Rinse the brush till almost completely clear and paint this pale tint from the narrowest part at the bottom and blend upwards. If you have this gradation from the full bodied color to its palest tint, it would be useful later on when you are painting to compare colors. It can be surprisingly difficult to distinguish between adjacent colors especially when they are very pale tints.

                This first wheel has S ruby red, DS new gamboge and MG Phthalo blue. It is quite a strong palette and I use this often.  Ruby red is cool, it is actually a magenta and has some blue in it. This mixed with new gamboge which is a very warm yellow makes a not very saturated orange. But these RO,O and YO are still interesting and I add another secondary color Schminke translucent orange to brighten these mixes if required. Since the blue is cool (has some yellow in it), the resulting violets are also not that saturated, I would add a mauve or a purple from the tube to these mixes. A warm red would be another useful additional color if you`re painting red flowers. The yellow and blue make great greens however. This warm yellow has some red in it, so these greens are toned down and are perfect for foliage. 


             In the second color wheel, the warm winsor red and winsor yellow (neither warm nor cool) make beautiful oranges. But both the winsor red and phthalo blue donot have violet in it, so the the resulting mixes are neutrals rather than violets. The greens are good. I would choose an additional cool red and warm blue. In fact, you can make a color wheel like this, where you have both warm and cool primaries (placed side by side) where you`ll always have clean mixes. Clockwise direction > A cool red next to a warm red which is mixed with a warm yellow placed next to a cool yellow which is mixed with a cool blue placed next to a warm blue which is mixed with the warm red.


               The same is the case with the third color wheel, beautiful oranges but neutrals on the violet side. DS prussian blue is a bit opaque but gives interesting dark valued shadow greens. 


                This fourth color wheel has beautiful clear mixes throughtout. Very close to the CYM color model. The primary is a magenta, so the secondary color is a blue violet, that mixed with the magenta gives the tertiary color violet. The primary hue, Cyan, mixed with BV gives blue! Magenta mixed with RO (secondary, here) gives red! You would probably need an additional warm red here, though.



                  This fifth wheel has the best mixes. Even though the rose lake is quite cool, the orange is still quite saturated. The warm blue makes clean violets. These three primaries would be sufficient for a painting.


               The ultramarine blue in this sixth wheel is the warmest of the blues here but does not make too great violets mixed with S permanent Karmin.  The lemon yellow is the coolest of all the yellows here. The greens have texture to them beacause of the ultramarine blue which is sedimentary.

the peonies..



          I put some masking fluid to save the whites for the water droplets. Don`t leave it on for more than 2-3 days. The lower flower has quin red , quin red mixed with new gamboge (to get a red orange), perylene maroon for the shadows, also a bit of ultramarine blue and ruby red. It is yet to open fully and is warmer than the upper one which has the same colors but more of ruby red. Perylene maroon may look very bright with a burnt orange hue while it is still wet, but gets a lot more dull towards a maroon shade after it has dried.

       If you`re having trouble with values, start out with painting a single flower or leaf with a single color from a black and white photo. Choose any dark valued color so that you can make use of the maximum number of values. A yellow will not give you the complete range. Any deep red or blue will work. Make a value scale with the color from 1 to 9 or from 1 to 5 if thats all you can differentiate for now. There`s a section on this in Beginnier`s cove > color theory > values. Wet a petal with clear water, let it sink in a bit while you determine which the lightest value is on that particular petal in the photo. It can be a 1 or 2 or 3 if its a sunlit petal but also in the higher range if it is in shadow. Lay that value in, determine what the next value is and lay that (the mix will be stronger now) on the first wash but not completely covering it. This wash will gently flare on the first one giving a soft edge if you have the right amount of moisture both on the brush and the paper. (u will get better with practice). You can continue doing this with the next values all the way till the darkest. But if the petal has reached the damp-dry stage before you have complete it, stop and let dry completely while you work on another petal. Later, make another wash of clear water and  start putting in the darker values. If you are confident you have got the hang of this, do the same flower with the full set of colors. Choose only the three primaries if you have a problem with color harmony. The red closest to the flower, a yellow to warm it and a blue for a cooler hue. Lay in the lightest values, but which color is that lightest value? Is it a bright red-orange, a red, a red tending towards violet or a dull red tending towards maroon? You can`t go wrong if you`re careful at each stage. Slowly you will realize you`re making  color choices instinctively and without fuss. Have fun and good luck…….