#6366df
a balanced, vivid blue · warm · closest name: slateblue
RGB
99, 102, 223
HSL
239°, 66%, 63%
CMYK
56, 54, 0, 13
Luminance
0.1748
Every format
| HEX | #6366df |
| RGB | rgb(99, 102, 223) |
| HSL | hsl(239, 66%, 63%) |
| CMYK | cmyk(56%, 54%, 0%, 13%) |
| LAB | lab(48.9 33.0 -62.4) |
| LCH | lch(48.9 70.5 297.9) |
| OKLCH | oklch(0.572 0.180 278.0) |
Copy-ready code
/* CSS */
color: #6366df;
background-color: #6366df;
/* Tailwind (arbitrary) */
class="text-[#6366df] bg-[#6366df]"
/* SCSS */
$brand: #6366df;
/* SwiftUI */
Color(red: 0.388, green: 0.400, blue: 0.875)
/* Android */
Color.parseColor("#6366df")Accessibility — WCAG contrast
Aa
#6366df on white: 4.67:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#6366df on black: 4.50:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red38.8%
Green40.0%
Blue87.5%
CMYK percentages
Cyan55.6%
Magenta54.3%
Yellow0.0%
Key (black)12.5%
Color previews
#6366df text on a black background
contrast 4.50:1
Card sample
#6366df text on a white background
contrast 4.67:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #6366df;
Background color
Panel with #6366df background
background-color: #6366df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #6366df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(99, 102, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(99, 102, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #6366df; background: linear-gradient(135deg, #6366df, #B363DF);