Ultramarine Blue
Registry ID
GCR-2025-657ABB
Issued December 7, 2025
Color data
HEX #657ABB
RGB 101 / 122 / 187
HSL 225° / 39% / 56%
CMYK 46 / 35 / 0 / 27
opencolors.org/certificate/657ABB
The registry ID is GCR, the year the color was named, and its hex.
Registry ID
GCR-2025-657ABB
Issued December 7, 2025
Color data
HEX #657ABB
RGB 101 / 122 / 187
HSL 225° / 39% / 56%
CMYK 46 / 35 / 0 / 27
opencolors.org/certificate/657ABB
White text
4.15:1 · Fail
Black text
5.05:1 · AA
CSS
--ultramarine-blue: #657ABB;
Tailwind
bg-[#657ABB]
Token
{
"ultramarine-blue": {
"value": "#657ABB"
}
}