The colour orange is created by combining red and yellow. Orange is a secondary colour, meaning it is created by combining two basic colours. The three fundamental hues are red, blue, and yellow.
Additionally, there are three secondary hues: orange, purple, and green. When one of the secondary colours is combined with the main colour exactly adjacent to it on the colour wheel, a tertiary colour is produced. Red-orange, yellow-orange, yellow-green, blue-green, blue-violet, and red-violet are the six tertiary hues. From the tertiary level onward, colours can be combined to create an infinite variety of hues.