Making a decision about which colors to select when designing your painting is certain to be perplexing for most of us – especially when starting out in our art careers.
One can go to this site http://www.color-wheel-pro.com/color-schemes.html to discover what is usually taught in art schools about color scheme selection. Most artists learn early-on the concepts of analagous color, complimentary color, triads, tetrads, and split complimentary color. I did not find those concepts particularly helpful when trying to choose colors for my paintings. So I offer here my method which may be helpful to you.
First, we ususally want to select three colors which will help to convey the message we wish to create in our painting. (“Message” as in “Mood” or “Spirit.”) Take a nice summer day, for example. We want a warm feeling in our painting. I love the blue skies often seen on such days.
Why only three colors, you ask? It is so easy to overdo it if you are not thinking about it. Three colors is quite enough when you know that you can darken, lighten, warm up or cool down almost any color. Yellow is an exception. You can warm a yellow by adding a touch of orange, but cooling a yellow can only be done by adding some white (which reduces its intensity) or adding a very tiny amount of green or a tiny amount of cyan (blue).
More importantly, I try never to have equal amounts of the three colors. To avoid this I allow one color to be the dominant color and the second color to be the “supporting actor”. The third color is used to create some harmonious contrast.
So we decide on a split compliment of cyan, yellow-orange and red-orange by refering to a color wheel…

Cyan with Split Complimentary Colors
Yes, we like the colors but what will the painting look like?
So, we paint some test spots of cyan, yellow-orange and red-orange…

Split Complement Color Patches
Ummm – ok, but what will my painting look like? What I see here is three colors in the same amounts plus I touched the bottom of the cyan patch with some red orange to see what that would look like.
So refering to my value sketches …

We notice that we are dealing with roughly rectanglular shapes…
So we decide to make a color sketch using rectangular shapes of different sizes….

Color Sketch
We find that it is interesting to try different patterns of rectangular shapes and vary the placement of our colors. But it doesn’t look like my value sketch !
So we sketch a very simple modification of our picutre plan keeping in mind that the value pattern is the most important thing – and I want my sketch to look more like the landscape I am trying to depict – good idea!
So I make a color sketch which will give me a better idea of what my finished painting might look like …

"Sunset" sketch on wet paper
I call these “sunset sketches” and you can see why.
Now that is more helpful to see what my colors would do in a landscape painting.

Wet-in-wet W/C Painting
I can try another version using the same split complement…

From here I can evaluate whether I have the feeling of a warm sunny day. I can modify the picture more once it is totally dry. This attempt was done on totally wet paper. When it is dry I may decide to develop some hard edges and more detail to create more interest. I must keep in mind that it is very easy to over-do it!
At least I have made a good start and from here I can attempt other versions of this painting using different value patterns or even different color choices.
It is critical to realize that I will vary the intensity of the three colors. I will grade the values of the colors frequently from dark to light to create more interest. And, finally, I will keep in mind that I want to keep the portions of the colors in three different quantities. In the last sketch I think the cyan and the yellow-orange are too much the same in size.
Same-ness will detract from the interest I am trying to create in the painting.
So try this out for yourself. See if painting a little color sketch of a sunset on wet paper will help you decide what to do with the colors you have selected.
Arty 12-23-09 Merry Christmas!