Sepia is a black brown colour. Originally made in the 18th century from the ink sacks of cuttlefish, it is now made from a mixture of carbon and umber. It is a highly permanent colour.
Indigo is a deep blue pigment that can range from dark black to pale blue. Originally extracted from plants similar to blue woad used by the ancient Britons, it was synthesised in 1878 in Germany. It...
A heavy opaque pigment, Mars Black is a dense black colour with a brown undertone. It is made from mineral iron oxide and was therefore named after the alchemical name for iron: Mars.
