A shade of green similar to emerald green, but with a tinge of yellow generally comparable to yellow green or chartreuse.

Also a double salt of copper arsenate and copper acetate; chemically it is a copper acetoarsenite:

C₄H₆As₆Cu₄O₁₆

This extremely poisonous, bright green powder was formerly used as a pigment and a wood preservative, and is still sometimes used as an insecticide and fungicide. Paris Green also goes by the remarkably less agreeable name of Schweinfurt Green.