In theory, any colour can be obtained by the mixing of the three basic primaries. we should be able to mix every color from the primaries. In practice the nature of pigments means that it is not so simple and so we use many more colors are used than just the primaries. That It doesn’t mean the primaries aren’t useful and if I were challenged to make as a wide range palette with as many colors that can be obtained from just a few as possible colours is desired, from as few as possible, I would start with a good starting point would be Matisse Primary Yellow, Red, and Blue, plus black and white.
Chemical Description: Arylide yellow, trace Titanium dioxide
Pigment Numbers: PY3 PY74 PW6
Lightfastness Rating: ASTM II
Pigment Opacity: Semi-Transparent
Paint Opacity: Semi-Transparent