yellow ochre

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Yellow ochre

Used throughout history, this permanent pigment can be safely mixed with other pigments

Manufacturer / product code: Kremer / 40010
Chemical description: yellow ochre is a natural mineral consisting of silica and clay owing its color to an iron mineral, goethite. This specific sample is a natural yellow earth from France. Kremer PDF
Color: yellow
Color Index: PY43
More info: Pigments Through The Ages Colourlex

Yellow ochre is one of the oldest and most enduring pigments used by humankind, valued for its warm, earthy tone and remarkable stability. Chemically, it is a naturally occurring iron oxide pigment, primarily composed of goethite (α-FeO(OH)), often mixed with varying amounts of clay, silica, and manganese compounds. These impurities influence its hue, which can range from pale straw yellow to deep golden brown. Yellow ochre has been used continuously from prehistoric cave paintings through ancient Egyptian, Greek, and Roman art, and well into medieval and Renaissance painting. Its popularity stems from its excellent lightfastness, chemical inertness, and compatibility with virtually all binding media, including fresco, tempera, oil, and encaustic. Unlike many organic yellows, yellow ochre does not fade or discolor with time, making it a reliable choice for both artists and conservators. When heated, it dehydrates and transforms into red ochre, further expanding its historical and technical importance.

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