These are essentially formalizations of preferences for colour combinations.
Key principle of `hue similarity', i.e,. we tend to prefer combinations of close hues.
But with `cool' colours there is more tolerance (where cool equates to saturation or intensity).
Principles of contrast, e.g., warm colours systematically preferred on cool backgrounds.
But significant variation in the degree to which people prefer harmonious colors.
Indeed, some people highly prefer contrastive colours.