#b40421
a dark, electric red · warm · closest name: firebrick
RGB
180, 4, 33
HSL
350°, 96%, 36%
CMYK
0, 98, 82, 29
Luminance
0.0990
Every format
| HEX | #b40421 |
| RGB | rgb(180, 4, 33) |
| HSL | hsl(350, 96%, 36%) |
| CMYK | cmyk(0%, 98%, 82%, 29%) |
| LAB | lab(37.7 61.8 36.9) |
| LCH | lch(37.7 72.0 30.9) |
| OKLCH | oklch(0.487 0.195 23.8) |
Copy-ready code
/* CSS */
color: #b40421;
background-color: #b40421;
/* Tailwind (arbitrary) */
class="text-[#b40421] bg-[#b40421]"
/* SCSS */
$brand: #b40421;
/* SwiftUI */
Color(red: 0.706, green: 0.016, blue: 0.129)
/* Android */
Color.parseColor("#b40421")Accessibility — WCAG contrast
Aa
#b40421 on white: 7.05:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#b40421 on black: 2.98:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red70.6%
Green1.6%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta97.8%
Yellow81.7%
Key (black)29.4%
Color previews
#b40421 text on a black background
contrast 2.98:1
Card sample
#b40421 text on a white background
contrast 7.05:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #b40421;
Background color
Panel with #b40421 background
background-color: #b40421;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #b40421;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(180, 4, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(180, 4, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b40421; background: linear-gradient(135deg, #b40421, #B45C04);