PB60 CI#69800 (Indanthrone Blue)
Series 4
Indanthrone Blue is classified as an organic vat pigment. It is a rich, deep blue with a subtly warm undertone. It has a transparent quality, making it excellent for glazing techniques with a non-granulating texture in watercolor applications.
Indanthrone was originally developed as a vat dye in the early 20th century by German chemical companies (around 1901). Vat dyes were known for exceptional fastness properties on textiles. Later, it was adapted as a pigment for artist paints and industrial applications, becoming available to artists primarily in the mid-to-late 20th century.
Light Fastness: 8/8
