#666ddf
a balanced, vivid blue · warm · closest name: royalblue
RGB
102, 109, 223
HSL
237°, 65%, 64%
CMYK
54, 51, 0, 13
Luminance
0.1909
Every format
| HEX | #666ddf |
| RGB | rgb(102, 109, 223) |
| HSL | hsl(237, 65%, 64%) |
| CMYK | cmyk(54%, 51%, 0%, 13%) |
| LAB | lab(50.8 29.3 -59.3) |
| LCH | lch(50.8 66.1 296.3) |
| OKLCH | oklch(0.587 0.171 277.1) |
Copy-ready code
/* CSS */
color: #666ddf;
background-color: #666ddf;
/* Tailwind (arbitrary) */
class="text-[#666ddf] bg-[#666ddf]"
/* SCSS */
$brand: #666ddf;
/* SwiftUI */
Color(red: 0.400, green: 0.427, blue: 0.875)
/* Android */
Color.parseColor("#666ddf")Accessibility — WCAG contrast
Aa
#666ddf on white: 4.36:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#666ddf on black: 4.82:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green42.7%
Blue87.5%
CMYK percentages
Cyan54.3%
Magenta51.1%
Yellow0.0%
Key (black)12.5%
Color previews
#666ddf text on a black background
contrast 4.82:1
Card sample
#666ddf text on a white background
contrast 4.36:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #666ddf;
Background color
Panel with #666ddf background
background-color: #666ddf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #666ddf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 109, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 109, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #666ddf; background: linear-gradient(135deg, #666ddf, #B066DF);