black
#000000
#636C51
#636C51
Color Values
| Format | #000000 | #636C51 |
|---|---|---|
| HEX | #000000 | #636C51 |
| RGB | 0, 0, 0 | 99, 108, 81 |
| HSL | 0.0, 0.0%, 0.0% | 80.0, 14.3%, 37.1% |
| HSV | 0.0, 0.0%, 0.0% | 80.0, 25.0%, 42.4% |
| CMYK | 0%, 0%, 0%, 100% | 8.3%, 0.0%, 25.0%, 57.6% |
| OKLCH | 0.0 0.0 0.0 | 0.5158 0.0423 122.9 |
Contrast & Accessibility
3.79:1
AA Fail
AA Large Pass
AAA Fail
AAA Large Fail
Text Readability
The quick brown fox jumps over the lazy dog
Text: #636C51 → Background: #000000
The quick brown fox jumps over the lazy dog
Text: #000000 → Background: #636C51
Color Difference (Delta E)
47.16
Very Different
0 — Identical
5 — Similar
25 — Noticeable
100 — Very Different
Gradient
Color Mixing
CSS Gradient Code
background: linear-gradient(to right, #000000, #636C51);
background: linear-gradient(135deg, #000000, #636C51);