#666cdd
a balanced, vivid blue · warm · closest name: royalblue
RGB
102, 108, 221
HSL
237°, 64%, 63%
CMYK
54, 51, 0, 13
Luminance
0.1877
Every format
| HEX | #666cdd |
| RGB | rgb(102, 108, 221) |
| HSL | hsl(237, 64%, 63%) |
| CMYK | cmyk(54%, 51%, 0%, 13%) |
| LAB | lab(50.4 29.3 -58.7) |
| LCH | lch(50.4 65.6 296.5) |
| OKLCH | oklch(0.584 0.169 277.5) |
Copy-ready code
/* CSS */
color: #666cdd;
background-color: #666cdd;
/* Tailwind (arbitrary) */
class="text-[#666cdd] bg-[#666cdd]"
/* SCSS */
$brand: #666cdd;
/* SwiftUI */
Color(red: 0.400, green: 0.424, blue: 0.867)
/* Android */
Color.parseColor("#666cdd")Accessibility — WCAG contrast
Aa
#666cdd on white: 4.42:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#666cdd on black: 4.75:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green42.4%
Blue86.7%
CMYK percentages
Cyan53.8%
Magenta51.1%
Yellow0.0%
Key (black)13.3%
Color previews
#666cdd text on a black background
contrast 4.75:1
Card sample
#666cdd text on a white background
contrast 4.42:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #666cdd;
Background color
Panel with #666cdd background
background-color: #666cdd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #666cdd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 108, 221, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 108, 221, 0.45);
Border & gradient
Gradient panel
border: 3px solid #666cdd; background: linear-gradient(135deg, #666cdd, #AF66DD);