CMYK Pigment

 
CMYK pigment refers to a color model based on four primary colors: Cyan (C), Magenta (M), Yellow (Y), and Key (K). The CMYK model is primarily used in color printing to produce a wide range of colors by layering these four pigments or inks in varying proportions. The term "Key" refers to black ink (K), which is used to provide depth and detail, as well as to achieve darker tones, since mixing the three colors of cyan, magenta, and yellow alone doesn’t produce a true black.