Raw Sienna S1 Winsor & Newton Artist Watercolour 5ml
- High performance pigments ensure strength of colour and high permanence ratings
- Wide and balanced spectrum of colours in half pans, whole pans and in 5ml, 14ml and 37ml tubes
- Pigments are treated according to their individual nature and behaviour
- Single pigments have been used across the range to ensure excellent mixability
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.
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