Three Primary Colors of Light
Red, green, and blue are called the three primary colors of light. By combining the three colors of light properly, you can create any color.
- Red + green = yellow
- Red + blue = magenta
- Green + blue = cyan
When you combine lights of different colors, the amount of light that enters your eyes increases, making them look brighter.
Color and Eye Recognition
Visible light has various colors. Light has a different color depending on the wavelength (or frequency).
So, how do people perceive color? Cone cells in the eye’s retina recognize color. There are three kinds of cone cells. Cone cells recognize red, green, and blue light, respectively.
If two or more cells react simultaneously, we recognize another color. The synthesis of light is done in the brain. In fact, you can create full colors by combining red, green, and blue light. TV and monitor screens use this principle.