In multi-color printing, the printing of process color by means of color separations corresponding to the four process colors: cyan, magenta, yellow, and black. Combinations or overprinted dots of these four colors are what create the wide range of colors discernible to the human eye that can be reproduced. Flat color is used to refer to multi-color printing using these four process colors but without overprinting them, so that each color only is reproduced as itself. See Process Color.