Color charge

Color charge is a property of quarks and gluons that is related to the particles' strong interactions in the theory of quantum chromodynamics (QCD).

Note that the "color charge" of quarks and gluons is completely unrelated to visual perception of color. The term color became popular simply because the charge responsible for the strong force between particles, can be analogized to the three primary colors of human vision: red, green, and blue. Another color scheme is "red, yellow, and blue", using paint, rather than light as the perceptible analogy.