Winsor & Newton Artists' Watercolours are truly an unparalleled watercolour range!With a reputation for supreme quality since the 1830's, this range of artists' watercolours are made from the finest pigments available in the highest concentrations possible, consistent with good handling qualities.Winsor & Newton Artists' Watercolours are available in both tubes and pans. Generally tube colours are preferred by artists using large quantities of colour, whilst pans generally find favour with beginners, outdoor sketchers and artists using smaller quantities.Color number: 465Series number: 1Chemical description: Copper phthalocyanine, Carbon black, QuinacridoneColor index name: PB 15, PBk 6, PV 19Color index number: 74160, 77266, 46500Permanence rating: AASTM lightfastness rating: IITransparency/Opacity: SOGranulating/Staining: St