Winsor & Newton has a reputation for supreme quality since the 1830's. Artists' Watercolours are made from the finest pigments available in the highest concentrations possible, consistent with good handling qualities. Colour number: 465 Series number: 1 Chemical description: Copper phthalocyanine, Carbon black, Quinacridone Colour index name: PB 15, PBk 6, PV 19 Colour index number: 74160, 77266, 46500 Permanence rating: A ASTM lightfastness rating: II Transparency/Opacity: SO Granulating/Staining: St