#4def21
a balanced, electric green · cool · closest name: lime
RGB
77, 239, 33
HSL
107°, 87%, 53%
CMYK
68, 0, 86, 6
Luminance
0.6342
Every format
| HEX | #4def21 |
| RGB | rgb(77, 239, 33) |
| HSL | hsl(107, 87%, 53%) |
| CMYK | cmyk(68%, 0%, 86%, 6%) |
| LAB | lab(83.7 -73.9 76.3) |
| LCH | lch(83.7 106.2 134.1) |
| OKLCH | oklch(0.835 0.263 140.5) |
Copy-ready code
/* CSS */
color: #4def21;
background-color: #4def21;
/* Tailwind (arbitrary) */
class="text-[#4def21] bg-[#4def21]"
/* SCSS */
$brand: #4def21;
/* SwiftUI */
Color(red: 0.302, green: 0.937, blue: 0.129)
/* Android */
Color.parseColor("#4def21")Accessibility — WCAG contrast
Aa
#4def21 on white: 1.53:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#4def21 on black: 13.68:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red30.2%
Green93.7%
Blue12.9%
CMYK percentages
Cyan67.8%
Magenta0.0%
Yellow86.2%
Key (black)6.3%
Color previews
#4def21 text on a black background
contrast 13.68:1
Card sample
#4def21 text on a white background
contrast 1.53:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #4def21;
Background color
Panel with #4def21 background
background-color: #4def21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #4def21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(77, 239, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(77, 239, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #4def21; background: linear-gradient(135deg, #4def21, #21EF7E);