#b71021
a dark, electric red · warm · closest name: firebrick
RGB
183, 16, 33
HSL
354°, 84%, 39%
CMYK
0, 91, 82, 28
Luminance
0.1055
Every format
| HEX | #b71021 |
| RGB | rgb(183, 16, 33) |
| HSL | hsl(354, 84%, 39%) |
| CMYK | cmyk(0%, 91%, 82%, 28%) |
| LAB | lab(38.8 61.1 38.3) |
| LCH | lch(38.8 72.1 32.1) |
| OKLCH | oklch(0.496 0.194 24.9) |
Copy-ready code
/* CSS */
color: #b71021;
background-color: #b71021;
/* Tailwind (arbitrary) */
class="text-[#b71021] bg-[#b71021]"
/* SCSS */
$brand: #b71021;
/* SwiftUI */
Color(red: 0.718, green: 0.063, blue: 0.129)
/* Android */
Color.parseColor("#b71021")Accessibility — WCAG contrast
Aa
#b71021 on white: 6.75:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#b71021 on black: 3.11:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red71.8%
Green6.3%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta91.3%
Yellow82.0%
Key (black)28.2%
Color previews
#b71021 text on a black background
contrast 3.11:1
Card sample
#b71021 text on a white background
contrast 6.75:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #b71021;
Background color
Panel with #b71021 background
background-color: #b71021;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #b71021;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(183, 16, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(183, 16, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b71021; background: linear-gradient(135deg, #b71021, #B76E10);