#f31f21
a balanced, electric red · warm · closest name: red
RGB
243, 31, 33
HSL
359°, 90%, 54%
CMYK
0, 87, 86, 5
Luminance
0.2014
Every format
| HEX | #f31f21 |
| RGB | rgb(243, 31, 33) |
| HSL | hsl(359, 90%, 54%) |
| CMYK | cmyk(0%, 87%, 86%, 5%) |
| LAB | lab(52.0 74.3 54.6) |
| LCH | lch(52.0 92.3 36.3) |
| OKLCH | oklch(0.615 0.239 27.8) |
Copy-ready code
/* CSS */
color: #f31f21;
background-color: #f31f21;
/* Tailwind (arbitrary) */
class="text-[#f31f21] bg-[#f31f21]"
/* SCSS */
$brand: #f31f21;
/* SwiftUI */
Color(red: 0.953, green: 0.122, blue: 0.129)
/* Android */
Color.parseColor("#f31f21")Accessibility — WCAG contrast
Aa
#f31f21 on white: 4.18:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#f31f21 on black: 5.03:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red95.3%
Green12.2%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta87.2%
Yellow86.4%
Key (black)4.7%
Color previews
#f31f21 text on a black background
contrast 5.03:1
Card sample
#f31f21 text on a white background
contrast 4.18:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #f31f21;
Background color
Panel with #f31f21 background
background-color: #f31f21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #f31f21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(243, 31, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(243, 31, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #f31f21; background: linear-gradient(135deg, #f31f21, #F3AA1F);