#2563EB
Bright Blue
A deterministic reference card for #2563EB. Every value, scheme, and snippet below is computed from the hex — no database, no guesswork.
- RGB
- 37, 99, 235
- HSL
- 221°, 83%, 53%
- Text
- White on top
Tailwind CSS · blue
tailwind · blue 600
The Tailwind CSS utility classes bg-blue-600, text-blue-600, 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 #2563EB as the text color.
Rating · AA
On black
The quick brown fox
Jumps over the lazy dog. Testing readability of #2563EB as the text color.
Rating · AA Large
Recommendation
When using #2563EB 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