Raw sienna and burnt sienna are very versatile and utilized colors in the decorative painter’s palette.
RS – RAW SIENNA
Origins: A mineral pigment from soil found in Sienna, Italy – thus it’s name.
Color: a warm, yellowish, earthy tonality with tones of orange
Opacity: medium transparency
Uses: Raw sienna, when mixed with UB (ultramarine blue), makes a wonderful, transparent green. Some specific woodgrain examples are: pine, burl, satinwood, maple
Used in faux marble techniques such as: yellow sienna and others
BS – BURNT SIENNA
Color: burnt sienna is made by burning raw sienna in an oven at a high degree. An oxidation happens with turns it into a warm, reddish brown (not to be confused with a red oxide (RO), which is red, but a cooler tonality).
Opacity: It is more transparent than raw sienna and less potent
Uses: Some specific woodgrain examples are: mahogany, walnut, pine, rosewood, cherry.
Used in faux marble techniques such as: cloudy marbles (such as rouge royal, cerfontaine, Saint Remy, and languedoc), verronese red, and yellow sienna.