A yellow-brown colour, Sienna is part of a group collectively known as 'earth colours'. Shades of Sienna vary in hue and have different names depending on the colour. Raw Sienna however, comes from iron ore or ferric oxide naturally found in clays. Unlike yellow ochres, which are generally opaque, siennas are more transparent. Sienna was one of the first pigments used for painting and can be found in prehistoric cave art. However, it was not until the dawning of the Renaissance in the 14th century that the pigment was further developed for artistic use. It was also during this time that it was named after Siena in Italy, where it was found. 

Series number: 1 Chemical description: Transparent synthetic iron oxides Colour index name: PY 42, PR 101 Colour index number: 77492,77491 Permanence rating: AA ASTM lightfastness rating: I Transparency/Opacity: T Granulating/Staining: G
The colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment in water colour, ie. granulating, staining or even wash. The resultant colour spectrum ensures the largest number of colours can be mixed from the range.

The optimum brilliance of every colour in the Artists' Water Colour range is unparalleled by any other water colour. Remarkably, this brilliance is combined with high permanence.

Please note: due to trading agreements we are unable to supply this product outside of the EU. However, we don’t want to disappoint anyone, so please feel free to use code USA10 for 10% off your first order on any other brand.