Windows Blue
Registry ID
GCR-2025-3778BF
Issued December 7, 2025
Color data
HEX #3778BF
RGB 55 / 120 / 191
HSL 211° / 55% / 48%
CMYK 71 / 37 / 0 / 25
opencolors.org/certificate/3778BF
The registry ID is GCR, the year the color was named, and its hex.
Registry ID
GCR-2025-3778BF
Issued December 7, 2025
Color data
HEX #3778BF
RGB 55 / 120 / 191
HSL 211° / 55% / 48%
CMYK 71 / 37 / 0 / 25
opencolors.org/certificate/3778BF
White text
4.56:1 · AA
Black text
4.60:1 · AA
CSS
--windows-blue: #3778BF;
Tailwind
bg-[#3778BF]
Token
{
"windows-blue": {
"value": "#3778BF"
}
}