Named after British painter William Payne (1760-1830), early formulas contained indigo, alizarin lake, and ivory black. Today more commonly a mixture of ultramarine blue and black, it is considered easier to control and less intense than black as a mixing color.
Pigment Classification: Mixture
Color Index Name: PB 29 / PBk 7
Color Index Number: 77007 / 77266
Chemical Description: Polysulfide of Sodium-Alumino Oxide Nearly Pure Amorphous Carbon