The Henny Penny in this post was painted using an analogous color scheme. That is, all the hues came from the same corner of the color wheel. Transparent pyrrol orange, quinacridone red, and perylene maroon (all Daniel Smith watercolors). Not exactly analogous, but pretty close.
The analogous colors are interesting to work with. When mixed, they often increase in intensity. I used the perylene maroon, a dark value, dusky pigment to try to tone things down a bit.
The trouble with the analagous palette in watercolors is that, unless you use black paint, which I don’t, the paints will often not create as dark a value as you might need. They are inherently incapable of making a dark dark. So to make the eye dark enough, I had to mix in a touch of sap green to the violet. It made a nice dark eye. Too dark, I see now. I need to add a little highlight.