#f40021
a balanced, electric red · warm · closest name: red
RGB
244, 0, 33
HSL
352°, 100%, 48%
CMYK
0, 100, 87, 4
Luminance
0.1934
Every format
| HEX | #f40021 |
| RGB | rgb(244, 0, 33) |
| HSL | hsl(352, 100%, 48%) |
| CMYK | cmyk(0%, 100%, 87%, 4%) |
| LAB | lab(51.1 77.8 54.0) |
| LCH | lch(51.1 94.7 34.8) |
| OKLCH | oklch(0.609 0.248 26.3) |
Copy-ready code
/* CSS */
color: #f40021;
background-color: #f40021;
/* Tailwind (arbitrary) */
class="text-[#f40021] bg-[#f40021]"
/* SCSS */
$brand: #f40021;
/* SwiftUI */
Color(red: 0.957, green: 0.000, blue: 0.129)
/* Android */
Color.parseColor("#f40021")Accessibility — WCAG contrast
Aa
#f40021 on white: 4.31:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#f40021 on black: 4.87:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red95.7%
Green0.0%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta100.0%
Yellow86.5%
Key (black)4.3%
Color previews
#f40021 text on a black background
contrast 4.87:1
Card sample
#f40021 text on a white background
contrast 4.31:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #f40021;
Background color
Panel with #f40021 background
background-color: #f40021;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #f40021;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(244, 0, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(244, 0, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #f40021; background: linear-gradient(135deg, #f40021, #F48200);