Stone Cold
Registry ID
GCR-2025-555555
Issued December 7, 2025
Color data
HEX #555555
RGB 85 / 85 / 85
HSL 0° / 0% / 33%
CMYK 0 / 0 / 0 / 67
opencolors.org/certificate/555555
The registry ID is GCR, the year the color was named, and its hex.
Registry ID
GCR-2025-555555
Issued December 7, 2025
Color data
HEX #555555
RGB 85 / 85 / 85
HSL 0° / 0% / 33%
CMYK 0 / 0 / 0 / 67
opencolors.org/certificate/555555
White text
7.46:1 · AAA
Black text
2.82:1 · Fail
CSS
--stone-cold: #555555;
Tailwind
bg-[#555555]
Token
{
"stone-cold": {
"value": "#555555"
}
}