black
#000000
#637978
#637978
Color Values
| Format | #000000 | #637978 |
|---|---|---|
| HEX | #000000 | #637978 |
| RGB | 0, 0, 0 | 99, 121, 120 |
| HSL | 0.0, 0.0%, 0.0% | 177.3, 10.0%, 43.1% |
| HSV | 0.0, 0.0%, 0.0% | 177.3, 18.2%, 47.5% |
| CMYK | 0%, 0%, 0%, 100% | 18.2%, 0.0%, 0.8%, 52.5% |
| OKLCH | 0.0 0.0 0.0 | 0.5582 0.0258 193.0 |
Contrast & Accessibility
4.54:1
AA Pass
AA Large Pass
AAA Fail
AAA Large Pass
Text Readability
The quick brown fox jumps over the lazy dog
Text: #637978 → Background: #000000
The quick brown fox jumps over the lazy dog
Text: #000000 → Background: #637978
Color Difference (Delta E)
49.84
Very Different
0 — Identical
5 — Similar
25 — Noticeable
100 — Very Different
Gradient
Color Mixing
CSS Gradient Code
background: linear-gradient(to right, #000000, #637978);
background: linear-gradient(135deg, #000000, #637978);