#f33737
a balanced, electric red · warm · closest name: crimson
RGB
243, 55, 55
HSL
0°, 89%, 58%
CMYK
0, 77, 77, 5
Luminance
0.2206
Every format
| HEX | #f33737 |
| RGB | rgb(243, 55, 55) |
| HSL | hsl(0, 89%, 58%) |
| CMYK | cmyk(0%, 77%, 77%, 5%) |
| LAB | lab(54.1 69.5 45.5) |
| LCH | lch(54.1 83.0 33.2) |
| OKLCH | oklch(0.631 0.223 26.5) |
Copy-ready code
/* CSS */
color: #f33737;
background-color: #f33737;
/* Tailwind (arbitrary) */
class="text-[#f33737] bg-[#f33737]"
/* SCSS */
$brand: #f33737;
/* SwiftUI */
Color(red: 0.953, green: 0.216, blue: 0.216)
/* Android */
Color.parseColor("#f33737")Accessibility — WCAG contrast
Aa
#f33737 on white: 3.88:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#f33737 on black: 5.41:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red95.3%
Green21.6%
Blue21.6%
CMYK percentages
Cyan0.0%
Magenta77.4%
Yellow77.4%
Key (black)4.7%
Color previews
#f33737 text on a black background
contrast 5.41:1
Card sample
#f33737 text on a white background
contrast 3.88:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #f33737;
Background color
Panel with #f33737 background
background-color: #f33737;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #f33737;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(243, 55, 55, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(243, 55, 55, 0.45);
Border & gradient
Gradient panel
border: 3px solid #f33737; background: linear-gradient(135deg, #f33737, #F3B437);