Subterranean River
Registry ID
GCR-2025-1F3B4D
Issued December 7, 2025
Color data
HEX #1F3B4D
RGB 31 / 59 / 77
HSL 203° / 43% / 21%
CMYK 60 / 23 / 0 / 70
opencolors.org/certificate/1F3B4D
The registry ID is GCR, the year the color was named, and its hex.
Registry ID
GCR-2025-1F3B4D
Issued December 7, 2025
Color data
HEX #1F3B4D
RGB 31 / 59 / 77
HSL 203° / 43% / 21%
CMYK 60 / 23 / 0 / 70
opencolors.org/certificate/1F3B4D
White text
11.73:1 · AAA
Black text
1.79:1 · Fail
CSS
--subterranean-river: #1F3B4D;
Tailwind
bg-[#1F3B4D]
Token
{
"subterranean-river": {
"value": "#1F3B4D"
}
}