Indigo is a deep blue pigment that can range from dark black to pale blue. Originally extracted from plants similar to blue woad used by the ancient Britons, it was synthesised in 1878 in Germany. It is one of the oldest blue pigments used universally.
Colour Number 322
Vehicle Oil Linseed Oil
Lightfastness Code I
Pigment Codes PB15 • PB29 • PBk7