Red plus green equals yellow, blue plus green equals green, red plus blue equals magenta, and green plus blue plus red equals white.

Three primary colors are composed of three basic primary colors. Primary colors refer to "basic colors" that cannot be obtained by mixing other colors. Other new colors can be mixed with different proportions of primary colors. If the mathematical vector space is used to explain the color system, then the primary colors can be used as a set of basis vectors in the space and can be combined into a "color space".

Common color meaning

Red is warm, strong-willed and extroverted, which is a very exciting color. Red is easy to attract people's attention, make people excited, excited, nervous and impulsive, and it is also a color that easily causes people's visual fatigue.

Yellow's character is cold, arrogant and sensitive, and has a constantly expanding and restless visual impression. Yellow is the most exquisite of all colors. As long as a small amount of other colors are mixed into pure yellow, its hue sense and color character will change to a great extent.