#b21721
a dark, electric red · warm · closest name: firebrick
RGB
178, 23, 33
HSL
356°, 77%, 39%
CMYK
0, 87, 82, 30
Luminance
0.1019
Every format
| HEX | #b21721 |
| RGB | rgb(178, 23, 33) |
| HSL | hsl(356, 77%, 39%) |
| CMYK | cmyk(0%, 87%, 82%, 30%) |
| LAB | lab(38.2 58.5 37.3) |
| LCH | lch(38.2 69.4 32.5) |
| OKLCH | oklch(0.490 0.186 25.4) |
Copy-ready code
/* CSS */
color: #b21721;
background-color: #b21721;
/* Tailwind (arbitrary) */
class="text-[#b21721] bg-[#b21721]"
/* SCSS */
$brand: #b21721;
/* SwiftUI */
Color(red: 0.698, green: 0.090, blue: 0.129)
/* Android */
Color.parseColor("#b21721")Accessibility — WCAG contrast
Aa
#b21721 on white: 6.91:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#b21721 on black: 3.04:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red69.8%
Green9.0%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta87.1%
Yellow81.5%
Key (black)30.2%
Color previews
#b21721 text on a black background
contrast 3.04:1
Card sample
#b21721 text on a white background
contrast 6.91:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #b21721;
Background color
Panel with #b21721 background
background-color: #b21721;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #b21721;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(178, 23, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(178, 23, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b21721; background: linear-gradient(135deg, #b21721, #B27417);