Primary (additive) colors

The additive color system that applies to images on TV and computer monitors begins with the absence of light; black. Colors are then added to the black background to form new colors. The standard additive primary colors are red, green and blue, which are combined to make white.

 The rules of additive color mixing are ...

 red + green = yellow

green + blue = cyan

blue + red = magenta

red + green + blue = white

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