Sepia is a reddish-brown colour, named after the rich brown pigment derived from the ink sac of the common cuttlefish. It was used by Leonardo da Vinci for his drawings and wash. It is a colour most familiar for its use in old photographs.
What colour is Sepia ? It is hard to be specific, as Sepia inks vary in colour from an almost brown to a distinctly reddish brown. French Sepia is probably the most authentic colour, as it is derived from the cuttlefish.