#66ade3
a balanced, vivid blue · cool · closest name: steelblue
RGB
102, 173, 227
HSL
206°, 69%, 65%
CMYK
55, 24, 0, 11
Luminance
0.3826
Every format
| HEX | #66ade3 |
| RGB | rgb(102, 173, 227) |
| HSL | hsl(206, 69%, 65%) |
| CMYK | cmyk(55%, 24%, 0%, 11%) |
| LAB | lab(68.2 -7.0 -34.0) |
| LCH | lch(68.2 34.7 258.3) |
| OKLCH | oklch(0.723 0.107 242.9) |
Copy-ready code
/* CSS */
color: #66ade3;
background-color: #66ade3;
/* Tailwind (arbitrary) */
class="text-[#66ade3] bg-[#66ade3]"
/* SCSS */
$brand: #66ade3;
/* SwiftUI */
Color(red: 0.400, green: 0.678, blue: 0.890)
/* Android */
Color.parseColor("#66ade3")Accessibility — WCAG contrast
Aa
#66ade3 on white: 2.43:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66ade3 on black: 8.65:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green67.8%
Blue89.0%
CMYK percentages
Cyan55.1%
Magenta23.8%
Yellow0.0%
Key (black)11.0%
Color previews
#66ade3 text on a black background
contrast 8.65:1
Card sample
#66ade3 text on a white background
contrast 2.43:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66ade3;
Background color
Panel with #66ade3 background
background-color: #66ade3;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66ade3;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 173, 227, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 173, 227, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66ade3; background: linear-gradient(135deg, #66ade3, #7266E3);