#66ade5
a balanced, vivid blue · cool · closest name: steelblue
RGB
102, 173, 229
HSL
207°, 71%, 65%
CMYK
56, 25, 0, 10
Luminance
0.3837
Every format
| HEX | #66ade5 |
| RGB | rgb(102, 173, 229) |
| HSL | hsl(207, 71%, 65%) |
| CMYK | cmyk(56%, 25%, 0%, 10%) |
| LAB | lab(68.3 -6.4 -34.9) |
| LCH | lch(68.3 35.5 259.6) |
| OKLCH | oklch(0.724 0.109 243.9) |
Copy-ready code
/* CSS */
color: #66ade5;
background-color: #66ade5;
/* Tailwind (arbitrary) */
class="text-[#66ade5] bg-[#66ade5]"
/* SCSS */
$brand: #66ade5;
/* SwiftUI */
Color(red: 0.400, green: 0.678, blue: 0.898)
/* Android */
Color.parseColor("#66ade5")Accessibility — WCAG contrast
Aa
#66ade5 on white: 2.42:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#66ade5 on black: 8.67:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green67.8%
Blue89.8%
CMYK percentages
Cyan55.5%
Magenta24.5%
Yellow0.0%
Key (black)10.2%
Color previews
#66ade5 text on a black background
contrast 8.67:1
Card sample
#66ade5 text on a white background
contrast 2.42:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #66ade5;
Background color
Panel with #66ade5 background
background-color: #66ade5;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #66ade5;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 173, 229, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 173, 229, 0.45);
Border & gradient
Gradient panel
border: 3px solid #66ade5; background: linear-gradient(135deg, #66ade5, #7466E5);