ultramarine blue
- HEX
- #1805db
- RGB
- rgb(24, 5, 219)
- HSL
- hsl(245.3, 95.5%, 43.9%)
- CMYK
- cmyk(89%, 97.7%, 0%, 14.1%)
- OKLCH
- oklch(41.0% 0.274 266.771)
ultramarine blue is a blue color with a cool undertone, written #1805db in hexadecimal.
Quick facts
| Family | Blue |
|---|---|
| Undertone | cool |
| Lightness | 43.9% |
| Contrast on white | 10.08 |
| Contrast on black | 2.08 |
Tints, shades and tones
Color harmonies
Accessibility
Contrast ratio against white and black, and the WCAG 2.1 text levels each one passes.
| Background | Contrast ratio | AA normal | AA large | AAA normal | AAA large |
|---|---|---|---|---|---|
| White | 10.08 | Pass | Pass | Pass | Pass |
| Black | 2.08 | Fail | Fail | Fail | Fail |
Similar colors
Sources
This name comes from the xkcd color survey.