Color Wheels are tools that teach color relationships by organizing colors in a circle so you can visualize how they relate to each other. Features: Primary Color Mixtures, Tints and Tones, Complementary Harmonies, Warm and Cool Colors, Gray Scale, Personal Palette Color Harmonies Terms and Definitions. Two-sided Color Wheel. Mix side shows colors mixed with each other or with black and white. Harmony side shows analogous and complementary colors. A must for anyone mixing paint.