1、Complementary to the three additive light primaries, there are three subtractive primaries.
2、The subtractive primaries are cyan (a bluish green), magenta (a purplish pink), and yellow;
3、CMYK: Cyan, Magenta, Yellow, Black. Process color printing inks (subtractive primaries) to print continuous-tone images.
4、Achromatic synthesis: A mass under colour removal technique in which black is used to replace those parts of colours that were formed by the combination of the three subtractive primaries.
