#66ff99
a light, electric green · cool · closest name: aquamarine
RGB
102, 255, 153
HSL
140°, 100%, 70%
CMYK
60, 0, 40, 0
Luminance
0.7664
Every format
| HEX | #66ff99 |
| RGB | rgb(102, 255, 153) |
| HSL | hsl(140, 100%, 70%) |
| CMYK | cmyk(60%, 0%, 40%, 0%) |
| LAB | lab(90.2 -62.2 36.9) |
| LCH | lch(90.2 72.3 149.3) |
| OKLCH | oklch(0.894 0.192 151.4) |
Copy-ready code
/* CSS */
color: #66ff99;
background-color: #66ff99;
/* Tailwind (arbitrary) */
class="text-[#66ff99] bg-[#66ff99]"
/* SCSS */
$brand: #66ff99;
/* SwiftUI */
Color(red: 0.400, green: 1.000, blue: 0.600)
/* Android */
Color.parseColor("#66ff99")Accessibility — WCAG contrast
Aa
#66ff99 on white: 1.29:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66ff99 on black: 16.33:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green100.0%
Blue60.0%
CMYK percentages
Cyan60.0%
Magenta0.0%
Yellow40.0%
Key (black)0.0%
Color previews
#66ff99 text on a black background
contrast 16.33:1
Card sample
#66ff99 text on a white background
contrast 1.29:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66ff99;
Background color
Panel with #66ff99 background
background-color: #66ff99;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66ff99;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 255, 153, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 255, 153, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66ff99; background: linear-gradient(135deg, #66ff99, #66FFFF);