#ff0421
a balanced, electric red · warm · closest name: red
RGB
255, 4, 33
HSL
353°, 100%, 51%
CMYK
0, 98, 87, 0
Luminance
0.2146
Every format
| HEX | #ff0421 |
| RGB | rgb(255, 4, 33) |
| HSL | hsl(353, 100%, 51%) |
| CMYK | cmyk(0%, 98%, 87%, 0%) |
| LAB | lab(53.5 80.2 56.8) |
| LCH | lch(53.5 98.2 35.3) |
| OKLCH | oklch(0.630 0.255 26.7) |
Copy-ready code
/* CSS */
color: #ff0421;
background-color: #ff0421;
/* Tailwind (arbitrary) */
class="text-[#ff0421] bg-[#ff0421]"
/* SCSS */
$brand: #ff0421;
/* SwiftUI */
Color(red: 1.000, green: 0.016, blue: 0.129)
/* Android */
Color.parseColor("#ff0421")Accessibility — WCAG contrast
Aa
#ff0421 on white: 3.97:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#ff0421 on black: 5.29:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red100.0%
Green1.6%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta98.4%
Yellow87.1%
Key (black)0.0%
Color previews
#ff0421 text on a black background
contrast 5.29:1
Card sample
#ff0421 text on a white background
contrast 3.97:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #ff0421;
Background color
Panel with #ff0421 background
background-color: #ff0421;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #ff0421;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(255, 4, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(255, 4, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ff0421; background: linear-gradient(135deg, #ff0421, #FF8F04);