Blue
Registry ID
GCR-2025-0000FF
Issued December 7, 2025
Color data
HEX #0000FF
RGB 0 / 0 / 255
HSL 240° / 100% / 50%
CMYK 100 / 100 / 0 / 0
opencolors.org/certificate/0000FF
The registry ID is GCR, the year the color was named, and its hex.
Registry ID
GCR-2025-0000FF
Issued December 7, 2025
Color data
HEX #0000FF
RGB 0 / 0 / 255
HSL 240° / 100% / 50%
CMYK 100 / 100 / 0 / 0
opencolors.org/certificate/0000FF
White text
8.59:1 · AAA
Black text
2.44:1 · Fail
CSS
--blue: #0000FF;
Tailwind
bg-[#0000FF]
Token
{
"blue": {
"value": "#0000FF"
}
}