#c51e21
a dark, vivid red · warm · closest name: firebrick
RGB
197, 30, 33
HSL
359°, 74%, 45%
CMYK
0, 85, 83, 23
Luminance
0.1291
Every format
| HEX | #c51e21 |
| RGB | rgb(197, 30, 33) |
| HSL | hsl(359, 74%, 45%) |
| CMYK | cmyk(0%, 85%, 83%, 23%) |
| LAB | lab(42.6 62.3 42.9) |
| LCH | lch(42.6 75.6 34.6) |
| OKLCH | oklch(0.530 0.200 26.9) |
Copy-ready code
/* CSS */
color: #c51e21;
background-color: #c51e21;
/* Tailwind (arbitrary) */
class="text-[#c51e21] bg-[#c51e21]"
/* SCSS */
$brand: #c51e21;
/* SwiftUI */
Color(red: 0.773, green: 0.118, blue: 0.129)
/* Android */
Color.parseColor("#c51e21")Accessibility — WCAG contrast
Aa
#c51e21 on white: 5.86:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#c51e21 on black: 3.58:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red77.3%
Green11.8%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta84.8%
Yellow83.2%
Key (black)22.7%
Color previews
#c51e21 text on a black background
contrast 3.58:1
Card sample
#c51e21 text on a white background
contrast 5.86:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #c51e21;
Background color
Panel with #c51e21 background
background-color: #c51e21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #c51e21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(197, 30, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(197, 30, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #c51e21; background: linear-gradient(135deg, #c51e21, #C58A1E);