This colour wheel is a complete guide to mixing colours. This colour wheel includes a value scale, colour nuances, tones, shadows, information regarding hot and cold colours, primary and secondary colours and illustrates how to mix colours to create colour harmonies. To use: Turn the wheel to align the color on the interior wheel with the color indicated along the edge of the exterior wheel, the resulting colour is displayed in a window on the interior wheel.A colour wheel is a practical reference tool for both the beginner as well as the accomplished artist. This product is also available in French.