Farbenfroh, the german word for colorful, is an information design project.
I set myself the goal of creating icons for colors, without actually using color. I asked 45 of my friends what their favorite color was, and using the different CMYK color values I depicted them.

The circle on top stands for yellow. The bigger the circle, the more yellow. The circle on the left stands for cyan, the one on the right for magenta and the middle one symbolizes key. The poster on the right is colorful, so you can compare.