#a3233f
a dark, vivid red · warm · closest name: firebrick
RGB
163, 35, 63
HSL
347°, 65%, 39%
CMYK
0, 79, 61, 36
Luminance
0.0935
Every format
| HEX | #a3233f |
| RGB | rgb(163, 35, 63) |
| HSL | hsl(347, 65%, 39%) |
| CMYK | cmyk(0%, 79%, 61%, 36%) |
| LAB | lab(36.6 52.6 16.3) |
| LCH | lch(36.6 55.0 17.2) |
| OKLCH | oklch(0.474 0.163 14.2) |
Copy-ready code
/* CSS */
color: #a3233f;
background-color: #a3233f;
/* Tailwind (arbitrary) */
class="text-[#a3233f] bg-[#a3233f]"
/* SCSS */
$brand: #a3233f;
/* SwiftUI */
Color(red: 0.639, green: 0.137, blue: 0.247)
/* Android */
Color.parseColor("#a3233f")Accessibility — WCAG contrast
Aa
#a3233f on white: 7.32:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#a3233f on black: 2.87:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red63.9%
Green13.7%
Blue24.7%
CMYK percentages
Cyan0.0%
Magenta78.5%
Yellow61.3%
Key (black)36.1%
Color previews
#a3233f text on a black background
contrast 2.87:1
Card sample
#a3233f text on a white background
contrast 7.32:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #a3233f;
Background color
Panel with #a3233f background
background-color: #a3233f;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #a3233f;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(163, 35, 63, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(163, 35, 63, 0.45);
Border & gradient
Gradient panel
border: 3px solid #a3233f; background: linear-gradient(135deg, #a3233f, #A35C23);