What are the three primary colors?

Three primary colors refer to the three basic colors that cannot be decomposed. What we usually call the three primary colors, namely magenta, yellow and cyan. The three primary colors can be mixed into all colors and add up to black at the same time. Black, white and gray belong to colorless system.

In terms of color, the mixed color of the three primary colors is black, while the mixed color of the three primary colors as light-based materials is white due to the special properties of light.

Three-color light model (English: RGB color model), also known as RGB color model or red, green and blue color model, is an additive color model, which adds red, green and blue colors in different proportions to produce various colors of light.

On the left of the above picture are the three primary colors of color and light, and on the right are the three primary colors of art.

The main purpose of RGB color model is to detect, represent and display images in electronic systems (such as televisions and computers), but it is also used in traditional photography. Before the electronic age, based on human perception of color, RGB color model has a solid theoretical support.

RGB is a device-dependent color space: different devices detect and reproduce specific RGB values differently, because color substances (fluorescent agents or dyes) and their individual response levels to red, green and blue vary from manufacturer to manufacturer, and even the time of the same device is different.