#b10b13
a dark, electric red · warm · closest name: firebrick
RGB
177, 11, 19
HSL
357°, 88%, 37%
CMYK
0, 94, 89, 31
Luminance
0.0963
Every format
| HEX | #b10b13 |
| RGB | rgb(177, 11, 19) |
| HSL | hsl(357, 88%, 37%) |
| CMYK | cmyk(0%, 94%, 89%, 31%) |
| LAB | lab(37.2 59.9 43.7) |
| LCH | lch(37.2 74.1 36.1) |
| OKLCH | oklch(0.482 0.192 27.4) |
Copy-ready code
/* CSS */
color: #b10b13;
background-color: #b10b13;
/* Tailwind (arbitrary) */
class="text-[#b10b13] bg-[#b10b13]"
/* SCSS */
$brand: #b10b13;
/* SwiftUI */
Color(red: 0.694, green: 0.043, blue: 0.075)
/* Android */
Color.parseColor("#b10b13")Accessibility — WCAG contrast
Aa
#b10b13 on white: 7.18:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#b10b13 on black: 2.93:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red69.4%
Green4.3%
Blue7.5%
CMYK percentages
Cyan0.0%
Magenta93.8%
Yellow89.3%
Key (black)30.6%
Color previews
#b10b13 text on a black background
contrast 2.93:1
Card sample
#b10b13 text on a white background
contrast 7.18:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #b10b13;
Background color
Panel with #b10b13 background
background-color: #b10b13;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #b10b13;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(177, 11, 19, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(177, 11, 19, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b10b13; background: linear-gradient(135deg, #b10b13, #B1720B);