Blue cannot be created by mixing two other colors together. It is referred to as a primary color. The three primary colors are red, blue and yellow.
Mixing any two of the three primary colors together creates a secondary color. These secondary colors include purple, orange and green. While blue cannot be created by mixing two colors together, blue can be mixed with other colors to create new shades. Colors such as teal and navy blue are created by mixing different amounts of red, yellow, black and white with primary blue. Blue dyes are made by adding minerals directly to a paint mixture.