Yeah, it is on the RGB and CMYK color models.
Yeah, it is! Next to green and blue. It's also a primary color in the CMYK color model, which is lesser known.
My favorite color is Red. Oh, neat! What shade of red is your favorite? Red can be scarlet, crimson, or even pink in shade. I would have to say that my favorite shade has to be Crimson. I see, you know red was put on faces for groups like the Mayans and Ancient Egyptians during their ceremonies? No, I wonder why though, I don't think it would be very comfortable. Does red have any effect on people? Indeed it does, heterosexual men find red enhances a woman's attractiveness even though women say no colors enhance a man's. Isn't red also a primary color?
It is a primary color in the RGB color model and the CMYK color model, and is the complementary color of cyan.