#a40c2c
a dark, electric red · warm · closest name: firebrick
RGB
164, 12, 44
HSL
347°, 86%, 35%
CMYK
0, 93, 73, 36
Luminance
0.0834
Every format
| HEX | #a40c2c |
| RGB | rgb(164, 12, 44) |
| HSL | hsl(347, 86%, 35%) |
| CMYK | cmyk(0%, 93%, 73%, 36%) |
| LAB | lab(34.7 57.0 25.9) |
| LCH | lch(34.7 62.7 24.5) |
| OKLCH | oklch(0.459 0.178 19.4) |
Copy-ready code
/* CSS */
color: #a40c2c;
background-color: #a40c2c;
/* Tailwind (arbitrary) */
class="text-[#a40c2c] bg-[#a40c2c]"
/* SCSS */
$brand: #a40c2c;
/* SwiftUI */
Color(red: 0.643, green: 0.047, blue: 0.173)
/* Android */
Color.parseColor("#a40c2c")Accessibility — WCAG contrast
Aa
#a40c2c on white: 7.87:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#a40c2c on black: 2.67:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red64.3%
Green4.7%
Blue17.3%
CMYK percentages
Cyan0.0%
Magenta92.7%
Yellow73.2%
Key (black)35.7%
Color previews
#a40c2c text on a black background
contrast 2.67:1
Card sample
#a40c2c text on a white background
contrast 7.87:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #a40c2c;
Background color
Panel with #a40c2c background
background-color: #a40c2c;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #a40c2c;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(164, 12, 44, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(164, 12, 44, 0.45);
Border & gradient
Gradient panel
border: 3px solid #a40c2c; background: linear-gradient(135deg, #a40c2c, #A4510C);