Windows Blue Color – #3778bf: Codes and Complete Breakdown
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The Windows Blue color hex code is #3778bf, and it is composed of 22% red, 47% green and 75% blue.
Windows Blue is a dark, bright, and cool color at 71% saturation. It has a contrast ratio of 4.56:1 against a white background, which passes WCAG AA (Web Content Accessibility Guidelines, Level AA) compliance.
For better visibility, it is recommended to use the Windows Blue color (#3778bf) against light backgrounds.

Windows Blue Color Shades
Complementary colors
Triadic colors
Tints or lighter colors
Darker colors
Analogous colors
Monochromatic colors
#3778bf
Windows Blue Color Codes and Information
Here’s a complete breakdown of the color Windows Blue, including its HEX, RGB, HSL, and CMYK values, as well as other information about the color.
| Data Type | Values/Details |
|---|---|
| Hex | #3778bf |
| RGB | rgb(55,120,191) |
| HSL | hsl(211,55.3%,48.2%) |
| CMYK | 71, 37, 0, 25 |
| HSV | 211, 71, 75 |
| RGB % | 22, 47, 75 |
| XYZ | 17.7, 18, 51.8 |
| LAB | 49.5, 3.2, -43.2 |
| Color Category | Dark |
| Color Family | Blue |
| Saturation | 71% |
| Temperature | Cool |
| Contrast Ratio Againt White (#ffffff) | 4.56 (passes WCAG AA) |
| Contrast Ratio Againt Black (#000000) | 4.6 (passes WCAG AA) |
Similar Colors to Windows Blue Color
#16b8f3

Zima Blue
#00308f

US Air Force Blue
#8093a4

Dusty Blue
#4169e1

Royal Blue
#dde0df

Barely Blue
#9bb3bc

Blue Shell
#cfe2ef

Weak Blue
#004d67

Work Blue









