here are two sets of primary colours:

Red Blue Green

and

Cyan Magenta Yellow

depending if you are using additive (light)

or subtractive (pigment) colours

Red, blue and green for additive colours (like a TV). Cyan,magenta and yellow for subtractive (like paint)

GREEN, RED ,BLUE ARE THE MAIN 3 COLORS. THEY WERE USED IN COLOR TV TO CREATE OTHER COLORS.

red, blue, and yellow.