Siren Scarlet
Registry ID
GCR-2025-B21D1D
Issued December 7, 2025
Color data
HEX #B21D1D
RGB 178 / 29 / 29
HSL 0° / 72% / 41%
CMYK 0 / 84 / 84 / 30
opencolors.org/certificate/B21D1D
The registry ID is GCR, the year the color was named, and its hex.
Registry ID
GCR-2025-B21D1D
Issued December 7, 2025
Color data
HEX #B21D1D
RGB 178 / 29 / 29
HSL 0° / 72% / 41%
CMYK 0 / 84 / 84 / 30
opencolors.org/certificate/B21D1D
White text
6.80:1 · AA
Black text
3.09:1 · Fail
CSS
--siren-scarlet: #B21D1D;
Tailwind
bg-[#B21D1D]
Token
{
"siren-scarlet": {
"value": "#B21D1D"
}
}