#66ffc4
a light, electric green · cool · closest name: aquamarine
RGB
102, 255, 196
HSL
157°, 100%, 70%
CMYK
60, 0, 23, 0
Luminance
0.7833
Every format
| HEX | #66ffc4 |
| RGB | rgb(102, 255, 196) |
| HSL | hsl(157, 100%, 70%) |
| CMYK | cmyk(60%, 0%, 23%, 0%) |
| LAB | lab(90.9 -54.1 16.3) |
| LCH | lch(90.9 56.5 163.3) |
| OKLCH | oklch(0.903 0.155 164.4) |
Copy-ready code
/* CSS */
color: #66ffc4;
background-color: #66ffc4;
/* Tailwind (arbitrary) */
class="text-[#66ffc4] bg-[#66ffc4]"
/* SCSS */
$brand: #66ffc4;
/* SwiftUI */
Color(red: 0.400, green: 1.000, blue: 0.769)
/* Android */
Color.parseColor("#66ffc4")Accessibility — WCAG contrast
Aa
#66ffc4 on white: 1.26:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66ffc4 on black: 16.67:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green100.0%
Blue76.9%
CMYK percentages
Cyan60.0%
Magenta0.0%
Yellow23.1%
Key (black)0.0%
Color previews
#66ffc4 text on a black background
contrast 16.67:1
Card sample
#66ffc4 text on a white background
contrast 1.26:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66ffc4;
Background color
Panel with #66ffc4 background
background-color: #66ffc4;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66ffc4;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 255, 196, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 255, 196, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66ffc4; background: linear-gradient(135deg, #66ffc4, #66D4FF);