black
#000000
#637B6C
#637B6C
Color Values
| Format | #000000 | #637B6C |
|---|---|---|
| HEX | #000000 | #637B6C |
| RGB | 0, 0, 0 | 99, 123, 108 |
| HSL | 0.0, 0.0%, 0.0% | 142.5, 10.8%, 43.5% |
| HSV | 0.0, 0.0%, 0.0% | 142.5, 19.5%, 48.2% |
| CMYK | 0%, 0%, 0%, 100% | 19.5%, 0.0%, 12.2%, 51.8% |
| OKLCH | 0.0 0.0 0.0 | 0.5592 0.0363 157.6 |
Contrast & Accessibility
4.58:1
AA Pass
AA Large Pass
AAA Fail
AAA Large Pass
Text Readability
The quick brown fox jumps over the lazy dog
Text: #637B6C → Background: #000000
The quick brown fox jumps over the lazy dog
Text: #000000 → Background: #637B6C
Color Difference (Delta E)
51.09
Very Different
0 — Identical
5 — Similar
25 — Noticeable
100 — Very Different
Gradient
Color Mixing
CSS Gradient Code
background: linear-gradient(to right, #000000, #637B6C);
background: linear-gradient(135deg, #000000, #637B6C);