sepia (n.) Look up sepia at
"rich brown pigment," 1821, from Italian seppia "cuttlefish" (borrowed with that meaning in English by 1560s), from Latin sepia "cuttlefish," from Greek sepia "cuttlefish," related to sepein "to make rotten" (see sepsis). The color was that of brown paint or ink prepared from the fluid secretions of the cuttlefish. Meaning "a sepia drawing" is recorded from 1863.