#643fda
a balanced, vivid blue · warm · closest name: slateblue
RGB
100, 63, 218
HSL
254°, 68%, 55%
CMYK
54, 71, 0, 15
Luminance
0.1133
Every format
| HEX | #643fda |
| RGB | rgb(100, 63, 218) |
| HSL | hsl(254, 68%, 55%) |
| CMYK | cmyk(54%, 71%, 0%, 15%) |
| LAB | lab(40.1 53.9 -73.7) |
| LCH | lch(40.1 91.3 306.2) |
| OKLCH | oklch(0.507 0.221 286.5) |
Copy-ready code
/* CSS */
color: #643fda;
background-color: #643fda;
/* Tailwind (arbitrary) */
class="text-[#643fda] bg-[#643fda]"
/* SCSS */
$brand: #643fda;
/* SwiftUI */
Color(red: 0.392, green: 0.247, blue: 0.855)
/* Android */
Color.parseColor("#643fda")Accessibility — WCAG contrast
Aa
#643fda on white: 6.43:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#643fda on black: 3.27:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red39.2%
Green24.7%
Blue85.5%
CMYK percentages
Cyan54.1%
Magenta71.1%
Yellow0.0%
Key (black)14.5%
Color previews
#643fda text on a black background
contrast 3.27:1
Card sample
#643fda text on a white background
contrast 6.43:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #643fda;
Background color
Panel with #643fda background
background-color: #643fda;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #643fda;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(100, 63, 218, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(100, 63, 218, 0.45);
Border & gradient
Gradient panel
border: 3px solid #643fda; background: linear-gradient(135deg, #643fda, #CB3FDA);