#ef0021
a balanced, electric red · warm · closest name: red
RGB
239, 0, 33
HSL
352°, 100%, 47%
CMYK
0, 100, 86, 6
Luminance
0.1846
Every format
| HEX | #ef0021 |
| RGB | rgb(239, 0, 33) |
| HSL | hsl(352, 100%, 47%) |
| CMYK | cmyk(0%, 100%, 86%, 6%) |
| LAB | lab(50.1 76.6 52.7) |
| LCH | lch(50.1 93.0 34.5) |
| OKLCH | oklch(0.599 0.244 26.1) |
Copy-ready code
/* CSS */
color: #ef0021;
background-color: #ef0021;
/* Tailwind (arbitrary) */
class="text-[#ef0021] bg-[#ef0021]"
/* SCSS */
$brand: #ef0021;
/* SwiftUI */
Color(red: 0.937, green: 0.000, blue: 0.129)
/* Android */
Color.parseColor("#ef0021")Accessibility — WCAG contrast
Aa
#ef0021 on white: 4.48:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#ef0021 on black: 4.69:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red93.7%
Green0.0%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta100.0%
Yellow86.2%
Key (black)6.3%
Color previews
#ef0021 text on a black background
contrast 4.69:1
Card sample
#ef0021 text on a white background
contrast 4.48:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #ef0021;
Background color
Panel with #ef0021 background
background-color: #ef0021;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #ef0021;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(239, 0, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(239, 0, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ef0021; background: linear-gradient(135deg, #ef0021, #EF7E00);