#66d4dd
a balanced, vivid cyan · cool · closest name: skyblue
RGB
102, 212, 221
HSL
185°, 64%, 63%
CMYK
54, 4, 0, 13
Luminance
0.5513
Every format
| HEX | #66d4dd |
| RGB | rgb(102, 212, 221) |
| HSL | hsl(185, 64%, 63%) |
| CMYK | cmyk(54%, 4%, 0%, 13%) |
| LAB | lab(79.1 -28.9 -14.1) |
| LCH | lch(79.1 32.2 205.9) |
| OKLCH | oklch(0.809 0.101 202.6) |
Copy-ready code
/* CSS */
color: #66d4dd;
background-color: #66d4dd;
/* Tailwind (arbitrary) */
class="text-[#66d4dd] bg-[#66d4dd]"
/* SCSS */
$brand: #66d4dd;
/* SwiftUI */
Color(red: 0.400, green: 0.831, blue: 0.867)
/* Android */
Color.parseColor("#66d4dd")Accessibility — WCAG contrast
Aa
#66d4dd on white: 1.75:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66d4dd on black: 12.03:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green83.1%
Blue86.7%
CMYK percentages
Cyan53.8%
Magenta4.1%
Yellow0.0%
Key (black)13.3%
Color previews
#66d4dd text on a black background
contrast 12.03:1
Card sample
#66d4dd text on a white background
contrast 1.75:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66d4dd;
Background color
Panel with #66d4dd background
background-color: #66d4dd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66d4dd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 212, 221, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 212, 221, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66d4dd; background: linear-gradient(135deg, #66d4dd, #6685DD);