#d40000
a dark, electric red · warm · closest name: red
RGB
212, 0, 0
HSL
0°, 100%, 42%
CMYK
0, 100, 100, 17
Luminance
0.1400
Every format
| HEX | #d40000 |
| RGB | rgb(212, 0, 0) |
| HSL | hsl(0, 100%, 42%) |
| CMYK | cmyk(0%, 100%, 100%, 17%) |
| LAB | lab(44.2 69.7 58.5) |
| LCH | lch(44.2 91.0 40.0) |
| OKLCH | oklch(0.546 0.224 29.2) |
Copy-ready code
/* CSS */
color: #d40000;
background-color: #d40000;
/* Tailwind (arbitrary) */
class="text-[#d40000] bg-[#d40000]"
/* SCSS */
$brand: #d40000;
/* SwiftUI */
Color(red: 0.831, green: 0.000, blue: 0.000)
/* Android */
Color.parseColor("#d40000")Accessibility — WCAG contrast
Aa
#d40000 on white: 5.53:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#d40000 on black: 3.80:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red83.1%
Green0.0%
Blue0.0%
CMYK percentages
Cyan0.0%
Magenta100.0%
Yellow100.0%
Key (black)16.9%
Color previews
#d40000 text on a black background
contrast 3.80:1
Card sample
#d40000 text on a white background
contrast 5.53:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #d40000;
Background color
Panel with #d40000 background
background-color: #d40000;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #d40000;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(212, 0, 0, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(212, 0, 0, 0.45);
Border & gradient
Gradient panel
border: 3px solid #d40000; background: linear-gradient(135deg, #d40000, #D48D00);