Sienna is from the word Italian
' meaning 'earth
'. Use of this word dates back to 1786.
The origin of the word is from the town of Sinope which lies upon the Black Sea coast of Anatolia (modern Turkey). This area is well known for its reddish-brown pigment that is found in the soil. The adjective 'sinopis' was used to designate that pigment and is today known as 'sienna' or 'burnt sienna'.
The pigment itself contains oxides of iron and manganese and is brownish yellow. Once burnt it becomes an orange red or reddish brown.
Color codes found in rgb.txt:
name hex r g b
sienna 0xA0522D 160 82 45
sienna1 0xFF8247 255 130 71
sienna2 0xEE7942 238 121 66
sienna3 0xCD6839 205 104 57
sienna4 0x8B4726 139 71 38
is a named HTML Color
that is recognized by many browsers as 'sienna'. See Named HTML Colors
for an example of this color.