#666bbc
a balanced, soft blue · warm · closest name: slateblue
RGB
102, 107, 188
HSL
237°, 39%, 57%
CMYK
46, 43, 0, 26
Luminance
0.1697
Every format
| HEX | #666bbc |
| RGB | rgb(102, 107, 188) |
| HSL | hsl(237, 39%, 57%) |
| CMYK | cmyk(46%, 43%, 0%, 26%) |
| LAB | lab(48.2 19.6 -43.4) |
| LCH | lch(48.2 47.6 294.4) |
| OKLCH | oklch(0.561 0.124 278.9) |
Copy-ready code
/* CSS */
color: #666bbc;
background-color: #666bbc;
/* Tailwind (arbitrary) */
class="text-[#666bbc] bg-[#666bbc]"
/* SCSS */
$brand: #666bbc;
/* SwiftUI */
Color(red: 0.400, green: 0.420, blue: 0.737)
/* Android */
Color.parseColor("#666bbc")Accessibility — WCAG contrast
Aa
#666bbc on white: 4.78:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#666bbc on black: 4.39:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green42.0%
Blue73.7%
CMYK percentages
Cyan45.7%
Magenta43.1%
Yellow0.0%
Key (black)26.3%
Color previews
#666bbc text on a black background
contrast 4.39:1
Card sample
#666bbc text on a white background
contrast 4.78:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #666bbc;
Background color
Panel with #666bbc background
background-color: #666bbc;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #666bbc;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 107, 188, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 107, 188, 0.45);
Border & gradient
Gradient panel
border: 3px solid #666bbc; background: linear-gradient(135deg, #666bbc, #9A66BC);