#666df0
a light, electric blue · warm · closest name: royalblue
RGB
102, 109, 240
HSL
237°, 82%, 67%
CMYK
58, 55, 0, 6
Luminance
0.2005
Every format
| HEX | #666df0 |
| RGB | rgb(102, 109, 240) |
| HSL | hsl(237, 82%, 67%) |
| CMYK | cmyk(58%, 55%, 0%, 6%) |
| LAB | lab(51.9 34.7 -67.0) |
| LCH | lch(51.9 75.5 297.4) |
| OKLCH | oklch(0.599 0.193 276.5) |
Copy-ready code
/* CSS */
color: #666df0;
background-color: #666df0;
/* Tailwind (arbitrary) */
class="text-[#666df0] bg-[#666df0]"
/* SCSS */
$brand: #666df0;
/* SwiftUI */
Color(red: 0.400, green: 0.427, blue: 0.941)
/* Android */
Color.parseColor("#666df0")Accessibility — WCAG contrast
Aa
#666df0 on white: 4.19:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#666df0 on black: 5.01:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green42.7%
Blue94.1%
CMYK percentages
Cyan57.5%
Magenta54.6%
Yellow0.0%
Key (black)5.9%
Color previews
#666df0 text on a black background
contrast 5.01:1
Card sample
#666df0 text on a white background
contrast 4.19:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #666df0;
Background color
Panel with #666df0 background
background-color: #666df0;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #666df0;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 109, 240, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 109, 240, 0.45);
Border & gradient
Gradient panel
border: 3px solid #666df0; background: linear-gradient(135deg, #666df0, #BB66F0);