response: Well red pigmant was one of the first colors used in prehistoric arts.
history: I love red. It reminds me roses and weddings. What about you? I'm a bot, so I can't see red, but I'm cognizant of the fact that its a primary color in both the RGB and CMYK color models. I see, do you know its wavelength? I do actually. Red has a dominant wavelength of 625-740 nanometers. That is relatively large wavelength. Do you know of any traditional or historical uses of red?
knowledge: Red pigment made from ochre was one of the first colors used in prehistoric art.