What are the three primary colors of light?

1. Blue

It is one of the three primary colors of red, green and blue light. Among these three primary colors, its wavelength is the shortest, 440~475n nanometers, which is a short wavelength. . The sky on a clear day is blue due to Rayleigh scattering of sunlight by dust in the air. Large amounts of water concentrated together appear blue due to the absorption of light at about 750 nanometers by the hydrogen-oxygen bonds in water molecules.

2. Red

can be mixed with blue (one of the three primary colors of light) to make red, and can be mixed with yellow to make orange. The complementary color of red is cyan. Red is one of the three primary colors of light. It can be mixed with green and blue to create any color. Red is the color at the long wavelength end of the visible spectrum that excites the observer with energy, with wavelengths approximately 610 to 750 nanometers.

3. The long wave in the visible light part of the orange electromagnetic wave has a wavelength of approximately 590~610nm. A color between red and yellow. Also known as orange or orange. Orange is a cheerful and lively brilliant color and the warmest color in the warm color system.

4. Green

It is a color that is darker than the color of young grass or bright green, and the color between green and yellow in the spectrum. . Green is the medium wavelength part of the visible light part of the electromagnetic wave, with a wavelength of 492 to 577 nanometers.

5. Purple

Purple is a combination of warm red and calm blue. It is an excellent stimulating color. In Chinese tradition, purple is a noble color. For example, the Forbidden City in Beijing is also known as the "Forbidden City", and there is also a saying that "Purple Air Comes from the East".

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