What are the primary colors of light that, when combined, produce white light?

The primary colors of light are red, green, and blue. When these three colors are combined in equal intensity, they produce white light. This principle is based on the additive color model used in various light-based technologies, such as screens and stage lighting, where different colors of light are added together to create a full spectrum of colors.

The combination of light works differently than pigments, which operate under the subtractive color model; thus, yellow and cyan pigments do not apply in this context. This reinforces the importance of recognizing the distinction between additive color mixing (used in light) and subtractive color mixing (used in paint or ink).