Iron River
Registry ID
GCR-2025-4D504B
Issued December 7, 2025
Color data
HEX #4D504B
RGB 77 / 80 / 75
HSL 96° / 3% / 30%
CMYK 4 / 0 / 6 / 69
opencolors.org/certificate/4D504B
The registry ID is GCR, the year the color was named, and its hex.
Registry ID
GCR-2025-4D504B
Issued December 7, 2025
Color data
HEX #4D504B
RGB 77 / 80 / 75
HSL 96° / 3% / 30%
CMYK 4 / 0 / 6 / 69
opencolors.org/certificate/4D504B
White text
8.19:1 · AAA
Black text
2.56:1 · Fail
CSS
--iron-river: #4D504B;
Tailwind
bg-[#4D504B]
Token
{
"iron-river": {
"value": "#4D504B"
}
}