Knight Dude
Keeping it going.
In terms of ART, it should be Red, Blue Yellow as the primary trio. Green, Purple, Orange are secondary. And then there's the printing type of Cyan, Megenta, Yellow.Actually, it is red, blue and green as primary colors. They just teach you yellow in elementary school for some reason.
In terms of Science, or how our eyes physically work, it's Red, Blue and Green. Certain animals like Dogs, I think see in Blue and Green, but not Red. Or something like that.