I learned about colours from colour wheel. Colour wheel is a tool for us to understand which colours go with what and wherever there is light, there is colour. Primary colours combine to make secondary colours which combine tertiary colours. Colour has darkness and lightness or value. Monochromatic colour is different shades of one colour. Analogous are the adjacent colours. Complement colours are the direct opposite on the colour wheel.
Every colour has their own meaning blue is deep, free, cold, clean educated and etc. For green is patient, adventurous, relaxed, athletic, safe, leaf, natural and etc. For orange is burn, warm, flavorful, active, food, helpful and etc. for purple is intelligent, royal, fantastic, artistic, feminine, fragrant, xolemn and etc. For red is dynamic, vital, romantic, alert, joyful, fun, love and etc. And for yellow is creative, young, visible, bright, light weight, expanding coward and etc.