Tertiary Colors.....!!!!!

The term "tertiary color" was originally coined to refer to "neutral" colors; those made by mixing all three primary colors in a color space (e.g. RGB, CMYK). Examples of these would be white or grey, in the (light i.e. RGB) additive system, and brown, grey, or black in the (pigment or paint i.e. CMYK) subtractive system. This is still the common meaning in most technical literature.

A tertiary color is a color made by mixing one primary color with one secondary color, in a given color space (e.g. RGB, CMYK). Unlike primary and secondary colors, these are not represented by one firmly established name each, but the following examples include some of the most popular. Tertiary colors are combinations of primary and secondary colors.
There are six tertiary colors:

red-orange,
yellow-orange,
yellow-green,
blue-green,
blue-violet,
and
red-violet.

By combining the primary color with the secondary color, we can form the new combination. Those are none other than the tertiary colors.