Organic insoluble organic compounds of high coloring strength are made in high-tech laboratories.
I usually avoid common lake and phthalocyanine pigments. I love the intensity of Azo-pigments, and also used in small amounts:
- magenta and red Quinacridones (I call them "quins" and use often the most lightfast versions) and Perylenes,
- yellow Hansas (I use sometimes in acrylic),
- blue Indanthrones (I used in one series) and Phthalos (blues I reserve for some acrylics, and I phased out of greens).