thumb|right|Chromium(III) oxide sample
thumb|Viridian (Pigment Green 18), left 3 smears; and Phthalocyanine Green (Pigment Green 7), right 3 smears
Viridian is a blue-green pigment, a hydrated chromium(III) oxide, of medium saturation and relatively dark in value. It is composed of a majority of green, followed by blue. The first recorded use of viridian as a color name in English was in the 1860s.
History
Viridian pigment was first prepared in 1838 in Paris by Parisian color chemist and painter Pannetier alongside his assistant Binet as a hydrated form of chromium oxide. The preparation process was demanding, expensive, and shrouded in secrecy.
|isccname=Strong green
Paolo Veronese green is the color that is called verde veronés in the Guía de coloraciones (Guide to colorations) by Rosa Gallego and Juan Carlos Sanz, a color dictionary published in 2005 that is widely popular in the Hispanophone realm.
Paolo Veronese green was a color formulated and used by the noted 16th-century Venetian artist Paolo Veronese.
Paolo Veronese green began to be used as a color name in English sometime in the 1800s (exact year uncertain).