burnt sienna

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A reddish-brown pigment prepared by calcining raw sienna.
2. n. A dark reddish orange.

Wiktionary

1. n. dark reddish brown colour, like that of roasted sienna.
2. adj. Of a dark reddish brown colour, like that of roasted sienna.

GNU Webster's 1913

1. n. sienna made of a much redder color by the action of fire.

WordNet 3.0

1. n. a shade of brown with a tinge of red
2. n. a reddish-brown pigment produced by roasting sienna