black
#000000
#EF403F
#EF403F
Color Values
| Format | #000000 | #EF403F |
|---|---|---|
| HEX | #000000 | #EF403F |
| RGB | 0, 0, 0 | 239, 64, 63 |
| HSL | 0.0, 0.0%, 0.0% | 0.3, 84.6%, 59.2% |
| HSV | 0.0, 0.0%, 0.0% | 0.3, 73.6%, 93.7% |
| CMYK | 0%, 0%, 0%, 100% | 0.0%, 73.2%, 73.6%, 6.3% |
| OKLCH | 0.0 0.0 0.0 | 0.6326 0.2118 25.9 |
Contrast & Accessibility
5.48:1
AA Pass
AA Large Pass
AAA Fail
AAA Large Pass
Text Readability
The quick brown fox jumps over the lazy dog
Text: #EF403F → Background: #000000
The quick brown fox jumps over the lazy dog
Text: #000000 → Background: #EF403F
Color Difference (Delta E)
94.88
Very Different
0 — Identical
5 — Similar
25 — Noticeable
100 — Very Different
Gradient
Color Mixing
CSS Gradient Code
background: linear-gradient(to right, #000000, #EF403F);
background: linear-gradient(135deg, #000000, #EF403F);