Notes on Colour

colour harmonies

Four-colour harmony

Harmonious colours

The colour theory developed by Itten is probably the best known colour theory among artists and designers. Based on Itten’s definition, I shall say that a set of colours is harmonious if the colours produce mid grey when they are mixed in equal quantities. A set of three colours is called a harmonious triad if it is harmonious according to this formal definition. Two colours are called complementary if they form a harmonious pair.

Itten also investigated unequal combinations of colours. He and many others have attempted to formalise some of these combinations in systems of colour schemes.