A chronology of various attempts through the last four centuries to visually organise and make sense of colour: from simple wheels to multi-layered pyramids, from scientific systems to those based on the hues of human emotion.
![The principles of harmony and contrast of colours [electronic resource] : and their applications to the arts : Chevreul, M. E. (Michel Eugène), 1786-1889 : Free Download, Borrow, and Streaming](https://i.pinimg.com/originals/d4/d0/15/d4d015f301b8b6c8248235f0a3964e5f.jpg)
