Art Spectrum® Viridian is a darker, deep semi-transparent emerald green that is on the cooler side of the spectrum. Slightly muted, Viridian has often been a staple for landscape painters. The name originates from the Latin word for green ‘viridis’. Viridian was first made in 1838 in Paris by the colourist Binet as a replacement for the dangerous Emerald Green.
| Pigments | Lightfastness | Permanence | Transparent/Opaque |
| PG18 | ASTMI | **** (excellent) |
Transparent |
ASTM Approved Permanent Colours American Society for Testing and Materials, conforming to standard D4302-90.