Color mixing : the color shows color, from basic principles and color mixing results on the front side; Spin around the paint , then you will find the color mixture results in the windows, to learn the color in a way Easy to Identify: Each Color helps show which colors are complimentary, and how they go (or 't go) . Your Good Assistant: with indicators for complementary, split complementary and triad color schemes; how to and shade, primary, secondary and tertiary references, and more. Wide application: the relationship is suitable to when , quilting, tattoo design, interior design, having craft projects, and home decorating; Great for artists, teachers, kids, painters, designers, and tattoo learners size: 23 x 23cm Material: Paper colour: As shown Package Contents: 2 x color Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.