Violet or purple is created when the colours red and blue are combined. The only way to create purple, a secondary colour, is by combining these two fundamental hues.
Primary colours include both red and blue. This indicates that other colours cannot be combined to create them. The new colour created when two primary colours are combined is referred to as a secondary colour, and depending on how much of each basic colour is present in the mixture, different hues can result.
On the colour wheel, each secondary colour is situated between the primary colours that it was created from.