black
#000000
#636F57
#636F57
Color Values
| Format | #000000 | #636F57 |
|---|---|---|
| HEX | #000000 | #636F57 |
| RGB | 0, 0, 0 | 99, 111, 87 |
| HSL | 0.0, 0.0%, 0.0% | 90.0, 12.1%, 38.8% |
| HSV | 0.0, 0.0%, 0.0% | 90.0, 21.6%, 43.5% |
| CMYK | 0%, 0%, 0%, 100% | 10.8%, 0.0%, 21.6%, 56.5% |
| OKLCH | 0.0 0.0 0.0 | 0.5245 0.0393 129.3 |
Contrast & Accessibility
3.94:1
AA Fail
AA Large Pass
AAA Fail
AAA Large Fail
Text Readability
The quick brown fox jumps over the lazy dog
Text: #636F57 → Background: #000000
The quick brown fox jumps over the lazy dog
Text: #000000 → Background: #636F57
Color Difference (Delta E)
47.69
Very Different
0 — Identical
5 — Similar
25 — Noticeable
100 — Very Different
Gradient
Color Mixing
CSS Gradient Code
background: linear-gradient(to right, #000000, #636F57);
background: linear-gradient(135deg, #000000, #636F57);