#4ef821
a balanced, electric green · cool · closest name: lime
RGB
78, 248, 33
HSL
107°, 94%, 55%
CMYK
69, 0, 87, 3
Luminance
0.6886
Every format
| HEX | #4ef821 |
| RGB | rgb(78, 248, 33) |
| HSL | hsl(107, 94%, 55%) |
| CMYK | cmyk(69%, 0%, 87%, 3%) |
| LAB | lab(86.4 -76.5 78.7) |
| LCH | lch(86.4 109.8 134.2) |
| OKLCH | oklch(0.858 0.271 140.6) |
Copy-ready code
/* CSS */
color: #4ef821;
background-color: #4ef821;
/* Tailwind (arbitrary) */
class="text-[#4ef821] bg-[#4ef821]"
/* SCSS */
$brand: #4ef821;
/* SwiftUI */
Color(red: 0.306, green: 0.973, blue: 0.129)
/* Android */
Color.parseColor("#4ef821")Accessibility — WCAG contrast
Aa
#4ef821 on white: 1.42:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#4ef821 on black: 14.77:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red30.6%
Green97.3%
Blue12.9%
CMYK percentages
Cyan68.5%
Magenta0.0%
Yellow86.7%
Key (black)2.7%
Color previews
#4ef821 text on a black background
contrast 14.77:1
Card sample
#4ef821 text on a white background
contrast 1.42:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #4ef821;
Background color
Panel with #4ef821 background
background-color: #4ef821;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #4ef821;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(78, 248, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(78, 248, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #4ef821; background: linear-gradient(135deg, #4ef821, #21F883);