#ef2521
a balanced, electric red · warm · closest name: red
RGB
239, 37, 33
HSL
1°, 87%, 53%
CMYK
0, 85, 86, 6
Luminance
0.1978
Every format
| HEX | #ef2521 |
| RGB | rgb(239, 37, 33) |
| HSL | hsl(1, 87%, 53%) |
| CMYK | cmyk(0%, 85%, 86%, 6%) |
| LAB | lab(51.6 72.2 54.0) |
| LCH | lch(51.6 90.1 36.8) |
| OKLCH | oklch(0.611 0.233 28.3) |
Copy-ready code
/* CSS */
color: #ef2521;
background-color: #ef2521;
/* Tailwind (arbitrary) */
class="text-[#ef2521] bg-[#ef2521]"
/* SCSS */
$brand: #ef2521;
/* SwiftUI */
Color(red: 0.937, green: 0.145, blue: 0.129)
/* Android */
Color.parseColor("#ef2521")Accessibility — WCAG contrast
Aa
#ef2521 on white: 4.24:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#ef2521 on black: 4.96:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red93.7%
Green14.5%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta84.5%
Yellow86.2%
Key (black)6.3%
Color previews
#ef2521 text on a black background
contrast 4.96:1
Card sample
#ef2521 text on a white background
contrast 4.24:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #ef2521;
Background color
Panel with #ef2521 background
background-color: #ef2521;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #ef2521;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(239, 37, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(239, 37, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ef2521; background: linear-gradient(135deg, #ef2521, #EFAE21);