#d10021
a dark, electric red · warm · closest name: crimson
RGB
209, 0, 33
HSL
351°, 100%, 41%
CMYK
0, 100, 84, 18
Luminance
0.1367
Every format
| HEX | #d10021 |
| RGB | rgb(209, 0, 33) |
| HSL | hsl(351, 100%, 41%) |
| CMYK | cmyk(0%, 100%, 84%, 18%) |
| LAB | lab(43.8 69.4 44.9) |
| LCH | lch(43.8 82.6 32.9) |
| OKLCH | oklch(0.542 0.220 25.1) |
Copy-ready code
/* CSS */
color: #d10021;
background-color: #d10021;
/* Tailwind (arbitrary) */
class="text-[#d10021] bg-[#d10021]"
/* SCSS */
$brand: #d10021;
/* SwiftUI */
Color(red: 0.820, green: 0.000, blue: 0.129)
/* Android */
Color.parseColor("#d10021")Accessibility — WCAG contrast
Aa
#d10021 on white: 5.63:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#d10021 on black: 3.73:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red82.0%
Green0.0%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta100.0%
Yellow84.2%
Key (black)18.0%
Color previews
#d10021 text on a black background
contrast 3.73:1
Card sample
#d10021 text on a white background
contrast 5.63:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #d10021;
Background color
Panel with #d10021 background
background-color: #d10021;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #d10021;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(209, 0, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(209, 0, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #d10021; background: linear-gradient(135deg, #d10021, #D16A00);