CMYK color model

CMYK color model – (process color, four color) is a subtractive color model, used in color printing, and is also used to describe the printing process itself.CMYK refers to the four inks used in some color printing: cyan, magenta, yellow, and key (black).  Although it varies by print house, press operator, press manufacturer, and press run, ink is typically applied in the order of the abbreviation.

In additive color models, such as RGB, white is the “additive” combination of all primary colored lights, while black is the absence of light. In the CMYK model, it is the opposite: white is the natural color of the paper or other background, while black results from a full combination of colored inks.