#000000 on #7c2d12 contrast ratio
2.24:1
Black text (#000000) on a dark orange (Tailwind orange-900) background (#7c2d12) fails every WCAG 2.2 contrast threshold.
Swap: #7c2d12 on #000000Large text sample
Normal body text in #000000 on #7c2d12. The quick brown fox jumps over the lazy dog.
WCAG 2.2 results
| Normal text — WCAG 1.4.3 AA | 4.5:1 | Fail |
|---|---|---|
| Large text — WCAG 1.4.3 AA | 3:1 | Fail |
| UI components & icons — WCAG 1.4.11 AA | 3:1 | Fail |
| Normal text — WCAG 1.4.6 AAA | 7:1 | Fail |
| Large text — WCAG 1.4.6 AAA | 4.5:1 | Fail |
Nearest passing colours
AA (4.5:1)
AAA (7:1)
How it looks with colour blindness
Simulated with the Machado et al. (2009) model at full severity.
- Aa
Protanopia (no red cones)
1.87:1
- Aa
Deuteranopia (no green cones)
2.47:1
- Aa
Tritanopia (no blue cones)
2.23:1
- Aa
Achromatopsia (no colour)
2.22:1
Try a different pair
Colours
Hex, rgb() or hsl(). Alpha is composited.
Preview
Large heading text
Normal body text at 14 px. The quick brown fox jumps over the lazy dog.
Colour-blindness preview
Simulated with Machado et al. (2009), full severity.
- AaProtanopia (no red cones)1.87:1
- AaDeuteranopia (no green cones)2.47:1
- AaTritanopia (no blue cones)2.23:1
- AaAchromatopsia (no colour)2.22:1
Contrast ratio
2.24:1
| Check | Criterion | Needs | Result |
|---|---|---|---|
| Normal text | 1.4.3 AA | 4.5:1 | Fail |
| Large text | 1.4.3 AA | 3:1 | Fail |
| UI components & graphics | 1.4.11 AA | 3:1 | Fail |
| Normal text | 1.4.6 AAA | 7:1 | Fail |
| Large text | 1.4.6 AAA | 4.5:1 | Fail |
Nearest passing colours
Same hue, lightness adjusted in OKLCH.
AA — 4.5:1
Change text
#b4b4b4 · 4.51:1
Change background
#b15d42 · 4.51:1
AAA — 7:1
Change text
#dfdfdf · 7.03:1
Change background
#d67e62 · 7.01:1
Large text means at least 24 CSS px, or 18.66 CSS px bold. Ratios are truncated, never rounded, so 4.49:1 is shown as failing 4.5:1.
Questions about this pair
- Is #000000 on #7c2d12 accessible?
- No. At 2.24:1 it fails every WCAG 2.2 text contrast threshold, including the 3:1 minimum for large text and UI components.
- What is the contrast ratio of #000000 and #7c2d12?
- 2.24:1, calculated with the WCAG 2.2 relative luminance formula. The ratio is truncated, not rounded, so it never shows a failing pair as passing.
- What colour passes AA on #7c2d12?
- #b4b4b4 is the closest colour to #000000 — same hue, adjusted lightness — that reaches 4.5:1 on #7c2d12.
Related colour pairs
- Aa 1.06:1#fff7ed on #ffffff · Fails
- Aa 1.06:1#ffffff on #fff7ed · Fails
- Aa 19.77:1#fff7ed on #000000 · AAA
- Aa 19.77:1#000000 on #fff7ed · AAA
- Aa 1.14:1#ffedd5 on #ffffff · Fails
- Aa 1.14:1#ffffff on #ffedd5 · Fails
- Aa 18.32:1#ffedd5 on #000000 · AAA
- Aa 18.32:1#000000 on #ffedd5 · AAA
- Aa 1.35:1#fed7aa on #ffffff · Fails
- Aa 1.35:1#ffffff on #fed7aa · Fails
- Aa 15.51:1#fed7aa on #000000 · AAA
- Aa 15.51:1#000000 on #fed7aa · AAA