#EF4444
Bright Red
A deterministic reference card for #EF4444. Every value, scheme, and snippet below is computed from the hex — no database, no guesswork.
- RGB
- 239, 68, 68
- HSL
- 0°, 84%, 60%
- Text
- Black on top
Tailwind CSS · red
tailwind · red 500
The Tailwind CSS utility classes bg-red-500, text-red-500, 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 #EF4444 as the text color.
Rating · AA Large
On black
The quick brown fox
Jumps over the lazy dog. Testing readability of #EF4444 as the text color.
Rating · AA
Recommendation
When using #EF4444 as a background, pair it with #000000 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