#66ade0
a balanced, vivid blue · cool · closest name: steelblue
RGB
102, 173, 224
HSL
205°, 66%, 64%
CMYK
55, 23, 0, 12
Luminance
0.3809
Every format
| HEX | #66ade0 |
| RGB | rgb(102, 173, 224) |
| HSL | hsl(205, 66%, 64%) |
| CMYK | cmyk(55%, 23%, 0%, 12%) |
| LAB | lab(68.1 -8.0 -32.5) |
| LCH | lch(68.1 33.5 256.3) |
| OKLCH | oklch(0.721 0.103 241.4) |
Copy-ready code
/* CSS */
color: #66ade0;
background-color: #66ade0;
/* Tailwind (arbitrary) */
class="text-[#66ade0] bg-[#66ade0]"
/* SCSS */
$brand: #66ade0;
/* SwiftUI */
Color(red: 0.400, green: 0.678, blue: 0.878)
/* Android */
Color.parseColor("#66ade0")Accessibility — WCAG contrast
Aa
#66ade0 on white: 2.44:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66ade0 on black: 8.62:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green67.8%
Blue87.8%
CMYK percentages
Cyan54.5%
Magenta22.8%
Yellow0.0%
Key (black)12.2%
Color previews
#66ade0 text on a black background
contrast 8.62:1
Card sample
#66ade0 text on a white background
contrast 2.44:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66ade0;
Background color
Panel with #66ade0 background
background-color: #66ade0;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66ade0;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 173, 224, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 173, 224, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66ade0; background: linear-gradient(135deg, #66ade0, #7066E0);