Caput Mortuum Pigment Color Index name PR101 - I Caput Mortuum is an iron oxide pigment. It is a deep transparent mauve brown with a low tinting strength. When tinted with whites the mauve tone becomes more prevalent. The original Caput Motuum pigment was made from ground up mummies, however that practice was discontinued in the 1800''s. Other names for Caput Mortuum are Cardinal Purple, Egyptian Brown and Mummy Brown. Great for glazing or for use in tonal paintings and portraiture.