Ocher (/ˈoʊkər/ OH-kər; from Ancient Greek ὤχρα (ṓkhra), from ὠχρός (ōkhrós) “pale”) or American English ocher, is a natural clay pigment, a mixture of iron oxide and variables of clay and sand. Its color varies from yellow to dark orange or brown. It is also the name of the colors produced by this pigment, specifically a light brownish yellow. A variant of ocher that contains a large amount of hematite or dehydrated iron oxide has a reddish hue called “red ochre” (or sanguine in some dialects). The word ocher also refers to clays colored with iron oxide from tin and copper mining.