Sienna Red
Registry ID
GCR-2025-B1635E
Issued December 7, 2025
Color data
HEX #B1635E
RGB 177 / 99 / 94
HSL 4° / 35% / 53%
CMYK 0 / 44 / 47 / 31
opencolors.org/certificate/B1635E
The registry ID is GCR, the year the color was named, and its hex.
Registry ID
GCR-2025-B1635E
Issued December 7, 2025
Color data
HEX #B1635E
RGB 177 / 99 / 94
HSL 4° / 35% / 53%
CMYK 0 / 44 / 47 / 31
opencolors.org/certificate/B1635E
White text
4.36:1 · Fail
Black text
4.82:1 · AA
CSS
--sienna-red: #B1635E;
Tailwind
bg-[#B1635E]
Token
{
"sienna-red": {
"value": "#B1635E"
}
}