#666cbb
a balanced, soft blue · warm · closest name: slateblue
RGB
102, 108, 187
HSL
236°, 39%, 57%
CMYK
46, 42, 0, 27
Luminance
0.1714
Every format
| HEX | #666cbb |
| RGB | rgb(102, 108, 187) |
| HSL | hsl(236, 39%, 57%) |
| CMYK | cmyk(46%, 42%, 0%, 27%) |
| LAB | lab(48.4 18.7 -42.5) |
| LCH | lch(48.4 46.4 293.8) |
| OKLCH | oklch(0.563 0.121 278.4) |
Copy-ready code
/* CSS */
color: #666cbb;
background-color: #666cbb;
/* Tailwind (arbitrary) */
class="text-[#666cbb] bg-[#666cbb]"
/* SCSS */
$brand: #666cbb;
/* SwiftUI */
Color(red: 0.400, green: 0.424, blue: 0.733)
/* Android */
Color.parseColor("#666cbb")Accessibility — WCAG contrast
Aa
#666cbb on white: 4.74:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#666cbb on black: 4.43:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green42.4%
Blue73.3%
CMYK percentages
Cyan45.5%
Magenta42.2%
Yellow0.0%
Key (black)26.7%
Color previews
#666cbb text on a black background
contrast 4.43:1
Card sample
#666cbb text on a white background
contrast 4.74:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #666cbb;
Background color
Panel with #666cbb background
background-color: #666cbb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #666cbb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 108, 187, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 108, 187, 0.45);
Border & gradient
Gradient panel
border: 3px solid #666cbb; background: linear-gradient(135deg, #666cbb, #9966BB);