What is the opposite of yellow?

There isn't a single, universally agreed-upon "opposite" of yellow in the same way black is the opposite of white. It depends on what system you're using:

• On the color wheel (or RYB color model): The opposite of yellow is violet (or purple). This is based on the traditional subtractive color mixing system used in art.

• In the additive color model (RGB): Yellow's complement is blue. This is because blue and yellow combine to create white light. RGB is how screens produce color.

• In terms of perceived "warmth" and "coolness": Yellow is generally considered a warm color, so a cool color like blue or blue-green could be considered its opposite in this context.

Therefore, the "opposite" of yellow depends on the context. If you're talking about color mixing for painting, violet is the answer. For computer screens or lighting, blue is more accurate.