#ef3521
a balanced, electric red · warm · closest name: tomato
RGB
239, 53, 33
HSL
6°, 87%, 53%
CMYK
0, 78, 86, 6
Luminance
0.2101
Every format
| HEX | #ef3521 |
| RGB | rgb(239, 53, 33) |
| HSL | hsl(6, 87%, 53%) |
| CMYK | cmyk(0%, 78%, 86%, 6%) |
| LAB | lab(53.0 68.3 55.1) |
| LCH | lch(53.0 87.8 38.9) |
| OKLCH | oklch(0.621 0.223 30.4) |
Copy-ready code
/* CSS */
color: #ef3521;
background-color: #ef3521;
/* Tailwind (arbitrary) */
class="text-[#ef3521] bg-[#ef3521]"
/* SCSS */
$brand: #ef3521;
/* SwiftUI */
Color(red: 0.937, green: 0.208, blue: 0.129)
/* Android */
Color.parseColor("#ef3521")Accessibility — WCAG contrast
Aa
#ef3521 on white: 4.04:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#ef3521 on black: 5.20:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red93.7%
Green20.8%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta77.8%
Yellow86.2%
Key (black)6.3%
Color previews
#ef3521 text on a black background
contrast 5.20:1
Card sample
#ef3521 text on a white background
contrast 4.04:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #ef3521;
Background color
Panel with #ef3521 background
background-color: #ef3521;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #ef3521;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(239, 53, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(239, 53, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ef3521; background: linear-gradient(135deg, #ef3521, #EFBE21);