In the 1660’s Sir Isaac Newton began a series of experiments with sunlight and prisms. A prism is the rainbow light what comes through clear objects when sunlight shines directly through. Newton demonstrated that clear white light was composed of seven visible colours - red, orange, yellow, green, blue, indigo, and violet.
Newton then arranged these colours into a circular format to demonstrate how they relate to each other. In 1766, the scientist Moses Harris created the first colour wheel to classify red, yellow, and blue as the primary colours.
Primary colours consist of, red, yellow and blue can not be made with other colours.
Secondary colours are made by mixing two of the Primary colours together. For example mixing red and blue will create purple.
Tertiary colours are made by mixing one primary and one secondary colour together which Tertiary colours are located between the Primary and Secondary colours on the wheel.
In colour theory, a tint is a mixture of a colour with white, which increases lightness, while a shade is a mixture with black, which increases darkness.