A slighty calmer and cooler blue than manganese blue, composed of transparent zinc white and copper phthalocyanine, as it is mixed it is a long time before it loses it's lightness and brightness.
Another option is Michael Harding's phthalo blue mixed with zinc white, they are made with slightly different phthalocyanines, and the Michael Harding's is slighter fresher looking.
Fantastic tint power, perfect for luminescent skies, just look at the swatch to have an idea of the luminescence. Packed full of pigment, stone ground in poppyseed oil, buttery texture, paints long.
Pigment PW4 & PB15:1
Slow drying, high tint power, opaque, totally lightfast.