Naples Yellow
Encyclopedia
Naples yellow, also called antimony yellow, can range from a somewhat muted, or earthy, reddish yellow pigment
Pigment
A pigment is a material that changes the color of reflected or transmitted light as the result of wavelength-selective absorption. This physical process differs from fluorescence, phosphorescence, and other forms of luminescence, in which a material emits light.Many materials selectively absorb...

 to a bright light yellow, and is the chemical compound lead(II) antimonate. Its chemical composition is Pb(SbO3)2/Pb3(Sb3O4)2. It is also known as jaune d'antimoine. It is one of the oldest synthetic pigments, dating from around 1620. The related mineral pigment, bindheimite, dates from the 16th century BC, however this natural version was rarely, if ever, used as a pigment. Naples yellow was used extensively by the Old Master
Old Master
"Old Master" is a term for a European painter of skill who worked before about 1800, or a painting by such an artist. An "old master print" is an original print made by an artist in the same period...

s and well into the 20th century. The genuine pigment is toxic, and its use today is becoming increasingly rare. Most paints labeled "Naples yellow" are instead made with a mix of modern, less toxic pigments. The colors of these paints vary considerably from one manufacturer to another.

The first recorded use of Naples yellow as a color name in English
English language
English is a West Germanic language that arose in the Anglo-Saxon kingdoms of England and spread into what was to become south-east Scotland under the influence of the Anglian medieval kingdom of Northumbria...

was in 1738.

The source of this color is: ISCC-NBS Dictionary of Color Names (1955)--Color Sample of Naples Yellow (color sample #83).
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