Natural Indigo
Registry ID
GCR-2025-003740
Issued December 7, 2025
Color data
HEX #003740
RGB 0 / 55 / 64
HSL 188° / 100% / 13%
CMYK 100 / 14 / 0 / 75
opencolors.org/certificate/003740
The registry ID is GCR, the year the color was named, and its hex.
Registry ID
GCR-2025-003740
Issued December 7, 2025
Color data
HEX #003740
RGB 0 / 55 / 64
HSL 188° / 100% / 13%
CMYK 100 / 14 / 0 / 75
opencolors.org/certificate/003740
White text
12.96:1 · AAA
Black text
1.62:1 · Fail
CSS
--natural-indigo: #003740;
Tailwind
bg-[#003740]
Token
{
"natural-indigo": {
"value": "#003740"
}
}