#66fdf4
a light, electric cyan · cool · closest name: cyan
RGB
102, 253, 244
HSL
176°, 97%, 70%
CMYK
60, 0, 4, 1
Luminance
0.7961
Every format
| HEX | #66fdf4 |
| RGB | rgb(102, 253, 244) |
| HSL | hsl(176, 97%, 70%) |
| CMYK | cmyk(60%, 0%, 4%, 1%) |
| LAB | lab(91.5 -41.9 -7.7) |
| LCH | lch(91.5 42.6 190.4) |
| OKLCH | oklch(0.911 0.128 189.7) |
Copy-ready code
/* CSS */
color: #66fdf4;
background-color: #66fdf4;
/* Tailwind (arbitrary) */
class="text-[#66fdf4] bg-[#66fdf4]"
/* SCSS */
$brand: #66fdf4;
/* SwiftUI */
Color(red: 0.400, green: 0.992, blue: 0.957)
/* Android */
Color.parseColor("#66fdf4")Accessibility — WCAG contrast
Aa
#66fdf4 on white: 1.24:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66fdf4 on black: 16.92:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green99.2%
Blue95.7%
CMYK percentages
Cyan59.7%
Magenta0.0%
Yellow3.6%
Key (black)0.8%
Color previews
#66fdf4 text on a black background
contrast 16.92:1
Card sample
#66fdf4 text on a white background
contrast 1.24:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66fdf4;
Background color
Panel with #66fdf4 background
background-color: #66fdf4;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66fdf4;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 253, 244, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 253, 244, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66fdf4; background: linear-gradient(135deg, #66fdf4, #66A1FD);