Viridian

 First synthesized in 1859, nontoxic Viridian replaced Verdigris and Emerald Green as a glazing color by the turn of the 20th century. It has good tinting strength, its tint muted like colors of the natural world.

Pigment: Hydrated chromium oxide (PG 18)
Vehicle: Alkali refined linseed oil
Lightfastness I, Series 4, TRANSPARENT, SDS