It is colors that can't be mixed
What Does Primary Colors Mean?
It means colours that you can not mix with any other colour to make the colour?
Primary colors are r.o.y.g.b.I.v which stands for red, orange, yellow, green, blue, indigo and violette they are called primary collors simply because they can't be replicated by mixing any other two collors
Red blue green because they make white light not color but just light