#ff1721
a balanced, electric red · warm · closest name: red
RGB
255, 23, 33
HSL
357°, 100%, 55%
CMYK
0, 91, 87, 0
Luminance
0.2198
Every format
| HEX | #ff1721 |
| RGB | rgb(255, 23, 33) |
| HSL | hsl(357, 100%, 55%) |
| CMYK | cmyk(0%, 91%, 87%, 0%) |
| LAB | lab(54.0 78.5 57.2) |
| LCH | lch(54.0 97.2 36.1) |
| OKLCH | oklch(0.634 0.251 27.4) |
Copy-ready code
/* CSS */
color: #ff1721;
background-color: #ff1721;
/* Tailwind (arbitrary) */
class="text-[#ff1721] bg-[#ff1721]"
/* SCSS */
$brand: #ff1721;
/* SwiftUI */
Color(red: 1.000, green: 0.090, blue: 0.129)
/* Android */
Color.parseColor("#ff1721")Accessibility — WCAG contrast
Aa
#ff1721 on white: 3.89:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#ff1721 on black: 5.40:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red100.0%
Green9.0%
Blue12.9%
CMYK percentages
Cyan0.0%
Magenta91.0%
Yellow87.1%
Key (black)0.0%
Color previews
#ff1721 text on a black background
contrast 5.40:1
Card sample
#ff1721 text on a white background
contrast 3.89:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #ff1721;
Background color
Panel with #ff1721 background
background-color: #ff1721;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #ff1721;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(255, 23, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(255, 23, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ff1721; background: linear-gradient(135deg, #ff1721, #FFA817);