Ocher is a light brownish-yellow clay earth pigment, a mixture of ferric oxide, clay, and sand.
- Code: PY43
- Chemical names : natural hydrated ferric oxide usually with some impurities, hydrated iron hydroxide, limonite
- Formula: (PY 43), FeO(OH)·nH 2O
- Permanence: very lightfast, I
- Opacity: opaque