Nobody is talking about paint, or pigments, or color charts - or the representation of those things on computers (which you are also confused about). Try to keep up.

Blue and yellow are on opposing sides of the spectrum of visible light. Light, as in photons and electromagnetic wavelengths. Physics, not RGB color schemes.

Nobody is talking about paint, or color charts. Try to keep up.

Blue and yellow are on opposing sides of the spectrum of visible light.