One of the best books in my private library is “The Art of Colour: The Subjective Experience and Objective Rationale of Colour” by Johannes Itten, a teacher at the Bauhaus who I admire so much.
Of course, Itten’s notions are only one way of looking at colours. Many researchers, artists and scientists have constructed a colour theory as well. But logically, as a designer and artist, I have a strong affinity with a fellow artist.
Itten explains the reality of colour and the way we as humans perceive colours. Colours affect each other. That influence is an action of our brain. “Eye and mind can only by comparison or contrast come to a clear perception.”