#66ef21
a balanced, electric green · cool · closest name: lime
RGB
102, 239, 33
HSL
100°, 87%, 53%
CMYK
57, 0, 86, 6
Luminance
0.6467
Every format
| HEX | #66ef21 |
| RGB | rgb(102, 239, 33) |
| HSL | hsl(100, 87%, 53%) |
| CMYK | cmyk(57%, 0%, 86%, 6%) |
| LAB | lab(84.3 -68.5 77.1) |
| LCH | lch(84.3 103.2 131.6) |
| OKLCH | oklch(0.842 0.254 138.4) |
Copy-ready code
/* CSS */
color: #66ef21;
background-color: #66ef21;
/* Tailwind (arbitrary) */
class="text-[#66ef21] bg-[#66ef21]"
/* SCSS */
$brand: #66ef21;
/* SwiftUI */
Color(red: 0.400, green: 0.937, blue: 0.129)
/* Android */
Color.parseColor("#66ef21")Accessibility — WCAG contrast
Aa
#66ef21 on white: 1.51:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66ef21 on black: 13.93:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green93.7%
Blue12.9%
CMYK percentages
Cyan57.3%
Magenta0.0%
Yellow86.2%
Key (black)6.3%
Color previews
#66ef21 text on a black background
contrast 13.93:1
Card sample
#66ef21 text on a white background
contrast 1.51:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66ef21;
Background color
Panel with #66ef21 background
background-color: #66ef21;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66ef21;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 239, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 239, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66ef21; background: linear-gradient(135deg, #66ef21, #21EF65);