Cobalt Night
Registry ID
GCR-2025-353739
Issued December 7, 2025
Color data
HEX #353739
RGB 53 / 55 / 57
HSL 210° / 4% / 22%
CMYK 7 / 4 / 0 / 78
opencolors.org/certificate/353739
The registry ID is GCR, the year the color was named, and its hex.
Registry ID
GCR-2025-353739
Issued December 7, 2025
Color data
HEX #353739
RGB 53 / 55 / 57
HSL 210° / 4% / 22%
CMYK 7 / 4 / 0 / 78
opencolors.org/certificate/353739
White text
11.95:1 · AAA
Black text
1.76:1 · Fail
CSS
--cobalt-night: #353739;
Tailwind
bg-[#353739]
Token
{
"cobalt-night": {
"value": "#353739"
}
}