Additive color theory The additive color theory deals with colors that are produced when light sources are mixed. The primary additive colors are red, blue, and green. Adding various levels of these colors, which are generated by a light source (such as a color monitor), produces all other colors. Mixing equal amounts of the additive primary colors produces the colors indicated in table 30. Table 30. Additive color mixing Mix equal amounts of... To produce... Red + Green + Blue White Red + Blue Magenta Green + Blue Cyan Red + Green Yellow 140 Chapter 5 - Theory of operation EN