Range :Old Holland Classic Watercolours
Colourname :Old Holland blue grey
Colournumber :259
Serie :B
Pigment classification :Synthetic ultramarine-Dioxazine-Carbon-Zinc oxide
Colour index :PB29-PV23-PBK7-PW4
Colour index number :77007-51319-77266-77947
Lightfastness : Lightfast pigment according to ASTM
category 1 and 2
Opacity/transparency :Opaque