#d31721
a balanced, electric red · warm · closest name: crimson
RGB
211, 23, 33
HSL
357°, 80%, 46%
CMYK
0, 89, 84, 17
Luminance
0.1457
Every format
| HEX | #d31721 |
| RGB | rgb(211, 23, 33) |
| HSL | hsl(357, 80%, 46%) |
| CMYK | cmyk(0%, 89%, 84%, 17%) |
| LAB | lab(45.0 67.4 46.2) |
| LCH | lch(45.0 81.7 34.4) |
| OKLCH | oklch(0.552 0.215 26.5) |
Copy-ready code
/* CSS */
color: #d31721;
background-color: #d31721;
/* Tailwind (arbitrary) */
class="text-[#d31721] bg-[#d31721]"
/* SCSS */
$brand: #d31721;
/* SwiftUI */
Color(red: 0.827, green: 0.090, blue: 0.129)
/* Android */
Color.parseColor("#d31721")Accessibility — WCAG contrast
Aa
#d31721 on white: 5.36:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#d31721 on black: 3.91:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red82.7%
Green9.0%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta89.1%
Yellow84.4%
Key (black)17.3%
Color previews
#d31721 text on a black background
contrast 3.91:1
Card sample
#d31721 text on a white background
contrast 5.36:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #d31721;
Background color
Panel with #d31721 background
background-color: #d31721;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #d31721;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(211, 23, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(211, 23, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #d31721; background: linear-gradient(135deg, #d31721, #D38A17);