Cobalt Blue

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Art Spectrum® Dry Ground Pigment Cobalt Blue.

Cobalt Blue is a clean medium-blue pigment discovered by French chemist Louis Thénard in the early 1800’s and was an alternative to the very expensive Lapis Lazuli.

A synthetic inorganic pigment with excellent lightfast properties.

Series Colour Index Chemical Description Classification Opacity ASTM
4 PB28 Oxides of Cobalt and Aluminum Synthetic Inorganic Semi  Transparent ASTMI

ASTM Approved Permanent Colours American Society for Testing and Materials, conforming to standard D4302-90.