Gordon begins with, "To understand sufficiently how the Ostwald Colour system was constructed and to understand how it may be used is not, I believe, as difficult as many would have us think."
The book cover
He recommends the system to artists, "making them more keenly aware of the properties of colours in harmonious associations" and also for use in schools, "by helping pupils to realise what a colour is, what it can do and how it may be combined with other colours."
The achromatic scale and the 8 hues and 24 colour circle (left) and isotint, isotone and isovalent circles (right)
"The Ostwald system creates a colour space based on dominant wavelength, purity, and luminance, mapping the values of …