Black Onyx Color – #2a272c: Codes and Complete Breakdown
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The Black Onyx color hex code is #2a272c, and it is composed of 16% red, 15% green and 17% blue.
Black Onyx is a dark, dull, desaturated, and cool color at 11% saturation. It has a contrast ratio of 14.74:1 against a white background, which passes WCAG AA (Web Content Accessibility Guidelines, Level AA) compliance.
For better visibility, it is recommended to use the Black Onyx color (#2a272c) against light backgrounds.

Black Onyx Color Shades
Complementary colors
Triadic colors
Tints or lighter colors
Darker colors
Analogous colors
Monochromatic colors
#2a272c
Black Onyx Color Codes and Information
Here’s a complete breakdown of the color Black Onyx, including its HEX, RGB, HSL, and CMYK values, as well as other information about the color.
| Data Type | Values/Details |
|---|---|
| Hex | #2a272c |
| RGB | rgb(42,39,44) |
| HSL | hsl(276,6%,16.3%) |
| CMYK | 5, 11, 0, 83 |
| HSV | 276, 11, 17 |
| RGB % | 16, 15, 17 |
| XYZ | 2.1, 2.1, 2.7 |
| LAB | 16, 2.4, -3.1 |
| Color Category | Dark |
| Color Family | Black |
| Saturation | 11% |
| Temperature | Cool |
| Contrast Ratio Againt White (#ffffff) | 14.74 (passes WCAG AA) |
| Contrast Ratio Againt Black (#000000) | 1.43 (fails WCAG AA) |
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