#66ff9f
a light, electric green · cool · closest name: aquamarine
RGB
102, 255, 159
HSL
142°, 100%, 70%
CMYK
60, 0, 38, 0
Luminance
0.7685
Every format
| HEX | #66ff9f |
| RGB | rgb(102, 255, 159) |
| HSL | hsl(142, 100%, 70%) |
| CMYK | cmyk(60%, 0%, 38%, 0%) |
| LAB | lab(90.3 -61.2 34.1) |
| LCH | lch(90.3 70.0 150.9) |
| OKLCH | oklch(0.895 0.186 152.8) |
Copy-ready code
/* CSS */
color: #66ff9f;
background-color: #66ff9f;
/* Tailwind (arbitrary) */
class="text-[#66ff9f] bg-[#66ff9f]"
/* SCSS */
$brand: #66ff9f;
/* SwiftUI */
Color(red: 0.400, green: 1.000, blue: 0.624)
/* Android */
Color.parseColor("#66ff9f")Accessibility — WCAG contrast
Aa
#66ff9f on white: 1.28:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66ff9f on black: 16.37:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green100.0%
Blue62.4%
CMYK percentages
Cyan60.0%
Magenta0.0%
Yellow37.6%
Key (black)0.0%
Color previews
#66ff9f text on a black background
contrast 16.37:1
Card sample
#66ff9f text on a white background
contrast 1.28:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66ff9f;
Background color
Panel with #66ff9f background
background-color: #66ff9f;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66ff9f;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 255, 159, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 255, 159, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66ff9f; background: linear-gradient(135deg, #66ff9f, #66F9FF);