#666dfd
a light, electric blue · warm · closest name: royalblue
RGB
102, 109, 253
HSL
237°, 97%, 70%
CMYK
60, 57, 0, 1
Luminance
0.2085
Every format
| HEX | #666dfd |
| RGB | rgb(102, 109, 253) |
| HSL | hsl(237, 97%, 70%) |
| CMYK | cmyk(60%, 57%, 0%, 1%) |
| LAB | lab(52.8 38.8 -72.8) |
| LCH | lch(52.8 82.5 298.1) |
| OKLCH | oklch(0.609 0.210 276.1) |
Copy-ready code
/* CSS */
color: #666dfd;
background-color: #666dfd;
/* Tailwind (arbitrary) */
class="text-[#666dfd] bg-[#666dfd]"
/* SCSS */
$brand: #666dfd;
/* SwiftUI */
Color(red: 0.400, green: 0.427, blue: 0.992)
/* Android */
Color.parseColor("#666dfd")Accessibility — WCAG contrast
Aa
#666dfd on white: 4.06:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#666dfd on black: 5.17:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green42.7%
Blue99.2%
CMYK percentages
Cyan59.7%
Magenta56.9%
Yellow0.0%
Key (black)0.8%
Color previews
#666dfd text on a black background
contrast 5.17:1
Card sample
#666dfd text on a white background
contrast 4.06:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #666dfd;
Background color
Panel with #666dfd background
background-color: #666dfd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #666dfd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 109, 253, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 109, 253, 0.45);
Border & gradient
Gradient panel
border: 3px solid #666dfd; background: linear-gradient(135deg, #666dfd, #C466FD);