black
#000000
#637571
#637571
Color Values
| Format | #000000 | #637571 |
|---|---|---|
| HEX | #000000 | #637571 |
| RGB | 0, 0, 0 | 99, 117, 113 |
| HSL | 0.0, 0.0%, 0.0% | 166.7, 8.3%, 42.4% |
| HSV | 0.0, 0.0%, 0.0% | 166.7, 15.4%, 45.9% |
| CMYK | 0%, 0%, 0%, 100% | 15.4%, 0.0%, 3.4%, 54.1% |
| OKLCH | 0.0 0.0 0.0 | 0.5464 0.0222 180.5 |
Contrast & Accessibility
4.31:1
AA Fail
AA Large Pass
AAA Fail
AAA Large Fail
Text Readability
The quick brown fox jumps over the lazy dog
Text: #637571 → Background: #000000
The quick brown fox jumps over the lazy dog
Text: #000000 → Background: #637571
Color Difference (Delta E)
48.3
Very Different
0 — Identical
5 — Similar
25 — Noticeable
100 — Very Different
Gradient
Color Mixing
CSS Gradient Code
background: linear-gradient(to right, #000000, #637571);
background: linear-gradient(135deg, #000000, #637571);