#a63b21
a dark, vivid red · warm · closest name: firebrick
RGB
166, 59, 33
HSL
12°, 67%, 39%
CMYK
0, 65, 80, 35
Luminance
0.1134
Every format
| HEX | #a63b21 |
| RGB | rgb(166, 59, 33) |
| HSL | hsl(12, 67%, 39%) |
| CMYK | cmyk(0%, 65%, 80%, 35%) |
| LAB | lab(40.2 42.7 38.5) |
| LCH | lch(40.2 57.5 42.0) |
| OKLCH | oklch(0.500 0.146 34.8) |
Copy-ready code
/* CSS */
color: #a63b21;
background-color: #a63b21;
/* Tailwind (arbitrary) */
class="text-[#a63b21] bg-[#a63b21]"
/* SCSS */
$brand: #a63b21;
/* SwiftUI */
Color(red: 0.651, green: 0.231, blue: 0.129)
/* Android */
Color.parseColor("#a63b21")Accessibility — WCAG contrast
Aa
#a63b21 on white: 6.42:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#a63b21 on black: 3.27:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red65.1%
Green23.1%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta64.5%
Yellow80.1%
Key (black)34.9%
Color previews
#a63b21 text on a black background
contrast 3.27:1
Card sample
#a63b21 text on a white background
contrast 6.42:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #a63b21;
Background color
Panel with #a63b21 background
background-color: #a63b21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #a63b21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(166, 59, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(166, 59, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #a63b21; background: linear-gradient(135deg, #a63b21, #A69421);