Anders Zorn was a Swedish painter, famous for using just four colors, White, Ivory black, Yellow Ochre, and Vermilion (or Cadmium Red Light or Medium).
Most great colorists used limited palettes. I've learned that the same limited palette that Zorn used was also used extensively by Sargent. Most of Sargent's watercolor work was accomplished with only four colors--ultramarine blue, yellow ochre, alizarin crimson, and burnt sienna.
Limited palettes are inexpensive, facilitate color harmony, and also allow for quick color-mixing when painting from life. Most observers of painting do not realize this, but experienced artists do! Many exceptional painters use limited palettes..(and don't consider it any kind of hardship).
I missed having blue on my palette...and this won't find it's way into a frame...but it was great practice and I love how uncomplicated and speedy it is to put out only FOUR colors! I'll do it again, for sure.
Oil on 9 x 12 canvas panel