A color model in which colors are built by adding together primary colors. RGB is an example.

Means of producing an image by combining red, green and blue light,which are each approximately one-third of the visible spectrum. When added together, red and green light produce yellow; red and blue light produce magenta; blue and green light produce cyan. When added together in equal amounts, red, green and blue light produce white light. Examples of the use of additive color are television screens and computer monitors.

A color system in which an image is reproduced by mixing appropriate amounts of red, green and blue lights.