a very dark shade of purple.

A pigment made from barium copper disilicate (“BaO·CuO·(SiO₂)₂”), used in ancient China.

A pigment made from barium copper disilicate (“BaCuSi₂O₆”), the first artificial purple pigment, used by Chinese for over 2 millennia before dying out at the end of the Han dynasty.

plural of French purple

plural of purple helmet

(organic chemistry) A sulfonephthalein derived from a brominated derivative of cresol; it is used as an acid-base indicator

plural of purple hairstreak

(slang) A recreational drug based on cough syrup, popular in the hip-hop community in the southern United States.

A large, dark brown and white (female), or purple and white (male) butterfly, Apatura iris, of the family Nymphalidae.

plural of purple emperor