Most color theories with the three primary colors red, yellow and blue. The primaries cannot be made by mixing other colors together. They must be purchased from a manufacturer and influenced by that manufacturer’s standards and capabilities. Each primary is unrelated: there is no red in the color yellow, no yellow in the color blue and no blue in the color red.
The color wheel is divided into three kinds of colors: primary, secondary and tertiary. The primary colors of red, yellow and blue are used to create all other colors. They are usually displayed according to an equilateral triangle within the wheel; Primary colors, when used together in a design, have strong color contrast because of their lack of similarity. Each color has a separate, independent identity.