Mars Yellow

Description

Mars Yellow is a warm, golden-brown synthetic earth pigment made from precipitated and calcined iron oxide. It is designed to replicate the natural warmth of traditional yellow ochres while offering improved purity, uniformity, and stability. Mars pigments are prized for their reliable color consistency, strong opacity, and excellent lightfastness.

This pigment produces a rich, earthy yellow with warm undertones, making it ideal for underpainting, glazing, and mixing into naturalistic palettes. Unlike some ochres, Mars Yellow maintains a consistent hue without variation in source minerals, making it a favorite for artists who require dependable, archival-quality pigments.

History

The Mars pigment family was first developed in the 18th and 19th centuries, when chemists discovered how to artificially manufacture iron oxides with consistent properties. These “synthetic earths” quickly gained popularity, as natural ochres often varied in tone and purity depending on the mine.

Mars Yellow became a standard in academic and professional palettes by the 19th century, offering the warmth and durability of ochres with better tinting strength and reliability. Its lightfastness and permanence made it especially useful for oil painting, fresco work, and printmaking.

Today, Mars Yellow continues to be used by painters, printmakers, and restoration artists worldwide. It remains a go-to pigment for classical palettes, earth-tone mixing, and any application requiring an absolutely stable, archival yellow.

Pigment Information

Pigment Type: Synthetic Inorganic (Precipitated Iron Oxide)

Chemical Composition: Fe₂O₃·H₂O (hydrated iron oxide)

Suitable Mediums: Watercolor, Oil, Tempera, Acrylic, Encaustic

Lightfastness: Excellent

Opacity: Opaque to Semi-Opaque

Other Names: Synthetic Yellow Ochre, Hydrated Iron Oxide Yellow

Color Index Code: PY42