Bristol Blue Color – #558f91: Codes and Complete Breakdown
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The Bristol Blue color hex code is #558f91, and it is composed of 33% red, 56% green and 57% blue.
Bristol Blue is a dark, muted, and cool color at 41% saturation. It has a contrast ratio of 3.67:1 against a white background, which fails WCAG AA (Web Content Accessibility Guidelines, Level AA) compliance.
For better visibility, it is recommended to use the Bristol Blue color (#558f91) against dark backgrounds.

Bristol Blue Color Shades
Complementary colors
Triadic colors
Tints or lighter colors
Darker colors
Analogous colors
Monochromatic colors
#558f91
Bristol Blue Color Codes and Information
Here’s a complete breakdown of the color Bristol Blue, including its HEX, RGB, HSL, and CMYK values, as well as other information about the color.
| Data Type | Values/Details |
|---|---|
| Hex | #558f91 |
| RGB | rgb(85,143,145) |
| HSL | hsl(182,26.1%,45.1%) |
| CMYK | 41, 1, 0, 43 |
| HSV | 182, 41, 57 |
| RGB % | 33, 56, 57 |
| XYZ | 18.7, 23.6, 30.4 |
| LAB | 55.7, -18.2, -7.1 |
| Color Category | Dark |
| Color Family | Blue |
| Saturation | 41% |
| Temperature | Cool |
| Contrast Ratio Againt White (#ffffff) | 3.67 (fails WCAG AA) |
| Contrast Ratio Againt Black (#000000) | 5.72 (passes WCAG AA) |
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Dusty Blue
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Blue Shell
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Weak Blue
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Twin Blue









