Blue Monday
Registry ID
GCR-2025-637983
Issued December 7, 2025
Color data
HEX #637983
RGB 99 / 121 / 131
HSL 199° / 14% / 45%
CMYK 24 / 8 / 0 / 49
opencolors.org/certificate/637983
The registry ID is GCR, the year the color was named, and its hex.
Registry ID
GCR-2025-637983
Issued December 7, 2025
Color data
HEX #637983
RGB 99 / 121 / 131
HSL 199° / 14% / 45%
CMYK 24 / 8 / 0 / 49
opencolors.org/certificate/637983
White text
4.57:1 · AA
Black text
4.59:1 · AA
CSS
--blue-monday: #637983;
Tailwind
bg-[#637983]
Token
{
"blue-monday": {
"value": "#637983"
}
}