#f31313
a balanced, electric red · warm · closest name: red
RGB
243, 19, 19
HSL
0°, 90%, 51%
CMYK
0, 92, 92, 5
Luminance
0.1957
Every format
| HEX | #f31313 |
| RGB | rgb(243, 19, 19) |
| HSL | hsl(0, 90%, 51%) |
| CMYK | cmyk(0%, 92%, 92%, 5%) |
| LAB | lab(51.4 75.8 59.8) |
| LCH | lch(51.4 96.6 38.3) |
| OKLCH | oklch(0.610 0.244 28.7) |
Copy-ready code
/* CSS */
color: #f31313;
background-color: #f31313;
/* Tailwind (arbitrary) */
class="text-[#f31313] bg-[#f31313]"
/* SCSS */
$brand: #f31313;
/* SwiftUI */
Color(red: 0.953, green: 0.075, blue: 0.075)
/* Android */
Color.parseColor("#f31313")Accessibility — WCAG contrast
Aa
#f31313 on white: 4.27:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#f31313 on black: 4.91:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red95.3%
Green7.5%
Blue7.5%
CMYK percentages
Cyan0.0%
Magenta92.2%
Yellow92.2%
Key (black)4.7%
Color previews
#f31313 text on a black background
contrast 4.91:1
Card sample
#f31313 text on a white background
contrast 4.27:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #f31313;
Background color
Panel with #f31313 background
background-color: #f31313;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #f31313;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(243, 19, 19, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(243, 19, 19, 0.45);
Border & gradient
Gradient panel
border: 3px solid #f31313; background: linear-gradient(135deg, #f31313, #F3A813);