#312E81
Dark Indigo
A deterministic reference card for #312E81. Every value, scheme, and snippet below is computed from the hex — no database, no guesswork.
- RGB
- 49, 46, 129
- HSL
- 242°, 47%, 34%
- Text
- White on top
Tailwind CSS · indigo
tailwind · indigo 900
The Tailwind CSS utility classes bg-indigo-900, text-indigo-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 #312E81 as the text color.
Rating · AAA
On black
The quick brown fox
Jumps over the lazy dog. Testing readability of #312E81 as the text color.
Rating · Fail
Recommendation
When using #312E81 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