White on Black - WCAG Contrast Check

The quick brown fox jumps over the lazy dog

Contrast Ratio

21.00

to 1

AA NormalPASS

AAA NormalPASS

AA LargePASS

AAA LargePASS

Color Details

Text Color

White

#fffffftext-white

Background Color

Black

#000000bg-black

WCAG Compliance

Criterion	Min Ratio	Result
Normal Text AA	4.5:1	PASS
Normal Text AAA	7:1	PASS
Large Text AA	3:1	PASS
Large Text AAA	4.5:1	PASS

Code Examples

Tailwind CSShtml

<!-- Text color: text-white -->
<!-- Background: bg-black -->
<div class="bg-black p-6 rounded-lg">
  <p class="text-white">
    Your accessible text here
  </p>
</div>

Plain CSScss

/* Text: #ffffff on Background: #000000 */
.accessible-container {
  background-color: #000000;
  color: #ffffff;
  padding: 1.5rem;
  border-radius: 0.5rem;
}

Use Cases

Primary button text
Card headers on Black backgrounds

Accessible Alternatives

text-white21.00:1

bg-black

text-white4.76:1

bg-slate-500

text-white7.58:1

bg-slate-600

Frequently Asked Questions

Is white text on black accessible?▼

Yes, this combination passes WCAG AA with a contrast ratio of 21.00:1, meeting the minimum 4.5:1 requirement for normal text.

What is the contrast ratio of white on black?▼

The contrast ratio is 21.00:1. WCAG AA requires at least 4.5:1 for normal text and 3:1 for large text. WCAG AAA requires 7:1 for normal text and 4.5:1 for large text.

Does this combination meet WCAG AAA?▼

Yes, with a 21.00:1 contrast ratio, this combination meets the strictest WCAG AAA standard (7:1 minimum), making it excellent for maximum accessibility.