colour harmony

Analogous

A base colour on the colour wheel in the middle of two colours around it. Creates low-contrast harmony

Monochromatic

Dark, medium and light contrast of a single base colour

Complement

The direct opposites on the colour wheel creates a diverse colour contrast

Split Complement

An asymmetrical colour split which creates a low contrast design 

Complement/Analogous

This is similar to the Split Complement, it just adds in more colour.

Analogous/Complement

The opposite to Complement/Analogous but a cooler colour harmony