Phthalocyanine blue belongs to the modern chemistry chapter of colour history. Its arrival in the 1930s widened the possibilities for strong, consistent blue colourants in paints, inks and other applications.
High tinting strength means a comparatively small amount can strongly influence a mixture. Different pigment forms and grades can lean towards green or red, so phthalo blue is not a single unvarying blue.
Organic is a chemistry classification here; it does not mean organically farmed or naturally mined. It is not a safety claim. A vivid blue also does not automatically identify this pigment without formulation evidence.
These articles explain pigment and mineral families, not the sourcing or complete formulation of any Cameron Colours paint. Historical names can cover different materials. Follow the product guidance and safety data for the paint you use; do not handle or heat raw pigment powders at home.
