Pigment Classification: MixtureColor Index Name: PG7 / PB15:3Color Index Number: 74160 74260Chemical Description: Chlorinated Copper PhthalocyanineOpacity/Transparency: Semi-TransparentLightfastness Rating: 1Permanency: ExcellentMunsell Notation Listing: N/AGloss Average: N/AViscosity Range: 75-100 CPSCIE L*a*b* Values: N/ATint Strength: N/A

74Tint Strength: 76

Chroma 8Gloss Average: 80

synthetic pigment has been used since the 1830's making it one of the most popular and affordable blues

polychromos farveblyant 103 Cobalt Blue Pigment Classification: MixtureColor Index Name:Polychromos colour pencils are professional artist quality Unsurpassed pigments and lightfastness Waterproof oil pastel pencils in soft, intense colours Shatterproof due to special gluing(en) Available in individual pencils or in different assorted sets Wood from certified and sustainable forestry Environmentally friendly and water based varnish Wide 3. 8 mm pencil.