#b00021
a dark, electric red · warm · closest name: firebrick
RGB
176, 0, 33
HSL
349°, 100%, 35%
CMYK
0, 100, 81, 31
Luminance
0.0934
Every format
| HEX | #b00021 |
| RGB | rgb(176, 0, 33) |
| HSL | hsl(349, 100%, 35%) |
| CMYK | cmyk(0%, 100%, 81%, 31%) |
| LAB | lab(36.6 61.2 35.6) |
| LCH | lch(36.6 70.8 30.2) |
| OKLCH | oklch(0.478 0.193 23.3) |
Copy-ready code
/* CSS */
color: #b00021;
background-color: #b00021;
/* Tailwind (arbitrary) */
class="text-[#b00021] bg-[#b00021]"
/* SCSS */
$brand: #b00021;
/* SwiftUI */
Color(red: 0.690, green: 0.000, blue: 0.129)
/* Android */
Color.parseColor("#b00021")Accessibility — WCAG contrast
Aa
#b00021 on white: 7.32:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#b00021 on black: 2.87:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red69.0%
Green0.0%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta100.0%
Yellow81.3%
Key (black)31.0%
Color previews
#b00021 text on a black background
contrast 2.87:1
Card sample
#b00021 text on a white background
contrast 7.32:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #b00021;
Background color
Panel with #b00021 background
background-color: #b00021;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #b00021;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(176, 0, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(176, 0, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b00021; background: linear-gradient(135deg, #b00021, #B05400);