#66ddf4
a light, electric cyan · cool · closest name: skyblue
RGB
102, 221, 244
HSL
190°, 87%, 68%
CMYK
58, 9, 0, 4
Luminance
0.6107
Every format
| HEX | #66ddf4 |
| RGB | rgb(102, 221, 244) |
| HSL | hsl(190, 87%, 68%) |
| CMYK | cmyk(58%, 9%, 0%, 4%) |
| LAB | lab(82.4 -27.0 -21.3) |
| LCH | lch(82.4 34.4 218.3) |
| OKLCH | oklch(0.838 0.111 212.2) |
Copy-ready code
/* CSS */
color: #66ddf4;
background-color: #66ddf4;
/* Tailwind (arbitrary) */
class="text-[#66ddf4] bg-[#66ddf4]"
/* SCSS */
$brand: #66ddf4;
/* SwiftUI */
Color(red: 0.400, green: 0.867, blue: 0.957)
/* Android */
Color.parseColor("#66ddf4")Accessibility — WCAG contrast
Aa
#66ddf4 on white: 1.59:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66ddf4 on black: 13.21:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green86.7%
Blue95.7%
CMYK percentages
Cyan58.2%
Magenta9.4%
Yellow0.0%
Key (black)4.3%
Color previews
#66ddf4 text on a black background
contrast 13.21:1
Card sample
#66ddf4 text on a white background
contrast 1.59:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66ddf4;
Background color
Panel with #66ddf4 background
background-color: #66ddf4;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66ddf4;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 221, 244, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 221, 244, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66ddf4; background: linear-gradient(135deg, #66ddf4, #667EF4);