#18181B
Muted Very Dark Indigo
A deterministic reference card for #18181B. Every value, scheme, and snippet below is computed from the hex — no database, no guesswork.
- RGB
- 24, 24, 27
- HSL
- 240°, 6%, 10%
- Text
- White on top
Tailwind CSS · zinc
tailwind · zinc 900
The Tailwind CSS utility classes bg-zinc-900, text-zinc-900, and friends all reference this hex value.
Developer snippets
Copy-ready code
Every snippet below is generated from the hex — not a hand-maintained table.
Conversions
Same color, seven encodings
Nearest matches
Closest in other design systems
Accessibility
Contrast against white & black
On white
The quick brown fox
Jumps over the lazy dog. Testing readability of #18181B as the text color.
Rating · AAA
On black
The quick brown fox
Jumps over the lazy dog. Testing readability of #18181B as the text color.
Rating · Fail
Recommendation
When using #18181B as a background, pair it with #ffffff text for the best WCAG contrast.
Contrast ratios only — one part of WCAG 2.1. Not a certification of accessibility or legal compliance.
Related Tailwind swatches