Red

Red is the color at the end of the visible Spectrum of light, next to orange and opposite violet. It has a Dominant wavelength of Approximately 625–740 nanometres.[1] It is a primary color in the RGB color model and the CMYK Color Model, and is the Complementary color of cyan. Reds range from the brilliant yellow-tinged scarlet and Vermillion to bluish-red crimson, and vary in shade from the pale red pink to the dark red burgundy.

https://en.wikipedia.org/wiki/Red