#d21721
a balanced, electric red · warm · closest name: crimson
RGB
210, 23, 33
HSL
357°, 80%, 46%
CMYK
0, 89, 84, 18
Luminance
0.1442
Every format
| HEX | #d21721 |
| RGB | rgb(210, 23, 33) |
| HSL | hsl(357, 80%, 46%) |
| CMYK | cmyk(0%, 89%, 84%, 18%) |
| LAB | lab(44.8 67.1 45.9) |
| LCH | lch(44.8 81.3 34.4) |
| OKLCH | oklch(0.550 0.214 26.5) |
Copy-ready code
/* CSS */
color: #d21721;
background-color: #d21721;
/* Tailwind (arbitrary) */
class="text-[#d21721] bg-[#d21721]"
/* SCSS */
$brand: #d21721;
/* SwiftUI */
Color(red: 0.824, green: 0.090, blue: 0.129)
/* Android */
Color.parseColor("#d21721")Accessibility — WCAG contrast
Aa
#d21721 on white: 5.41:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#d21721 on black: 3.88:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red82.4%
Green9.0%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta89.0%
Yellow84.3%
Key (black)17.6%
Color previews
#d21721 text on a black background
contrast 3.88:1
Card sample
#d21721 text on a white background
contrast 5.41:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #d21721;
Background color
Panel with #d21721 background
background-color: #d21721;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #d21721;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(210, 23, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(210, 23, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #d21721; background: linear-gradient(135deg, #d21721, #D28A17);