#42e821
a balanced, electric green · cool · closest name: lime
RGB
66, 232, 33
HSL
110°, 81%, 52%
CMYK
72, 0, 86, 9
Luminance
0.5898
Every format
| HEX | #42e821 |
| RGB | rgb(66, 232, 33) |
| HSL | hsl(110, 81%, 52%) |
| CMYK | cmyk(72%, 0%, 86%, 9%) |
| LAB | lab(81.3 -73.8 74.1) |
| LCH | lch(81.3 104.5 134.9) |
| OKLCH | oklch(0.815 0.259 141.1) |
Copy-ready code
/* CSS */
color: #42e821;
background-color: #42e821;
/* Tailwind (arbitrary) */
class="text-[#42e821] bg-[#42e821]"
/* SCSS */
$brand: #42e821;
/* SwiftUI */
Color(red: 0.259, green: 0.910, blue: 0.129)
/* Android */
Color.parseColor("#42e821")Accessibility — WCAG contrast
Aa
#42e821 on white: 1.64:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#42e821 on black: 12.80:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green91.0%
Blue12.9%
CMYK percentages
Cyan71.6%
Magenta0.0%
Yellow85.8%
Key (black)9.0%
Color previews
#42e821 text on a black background
contrast 12.80:1
Card sample
#42e821 text on a white background
contrast 1.64:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #42e821;
Background color
Panel with #42e821 background
background-color: #42e821;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #42e821;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 232, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 232, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #42e821; background: linear-gradient(135deg, #42e821, #21E885);