Primary Colors : The spectral colors blue, green and red are called primary colors because all the colors can be produced by mixing these in proper proportion.
» Red + Green + Blue = White
Secondary Colors : The colors produced by mixing any two primary colors is called a secondary colors. There are three secondary colors Yellow, Magenta and Cyan as :
» Green + Red = Yellow
» Red + Blue = Magenta
» Blue + Green = Cyan
When the three secondary colors are mixed, Black color is produced.
» Yellow + Magenta + Cyan = Black
