#663bc9
a balanced, vivid violet · warm · closest name: slateblue
RGB
102, 59, 201
HSL
258°, 57%, 51%
CMYK
49, 71, 0, 21
Luminance
0.1017
Every format
| HEX | #663bc9 |
| RGB | rgb(102, 59, 201) |
| HSL | hsl(258, 57%, 51%) |
| CMYK | cmyk(49%, 71%, 0%, 21%) |
| LAB | lab(38.1 51.5 -67.2) |
| LCH | lch(38.1 84.6 307.5) |
| OKLCH | oklch(0.489 0.206 290.6) |
Copy-ready code
/* CSS */
color: #663bc9;
background-color: #663bc9;
/* Tailwind (arbitrary) */
class="text-[#663bc9] bg-[#663bc9]"
/* SCSS */
$brand: #663bc9;
/* SwiftUI */
Color(red: 0.400, green: 0.231, blue: 0.788)
/* Android */
Color.parseColor("#663bc9")Accessibility — WCAG contrast
Aa
#663bc9 on white: 6.92:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#663bc9 on black: 3.03:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green23.1%
Blue78.8%
CMYK percentages
Cyan49.3%
Magenta70.6%
Yellow0.0%
Key (black)21.2%
Color previews
#663bc9 text on a black background
contrast 3.03:1
Card sample
#663bc9 text on a white background
contrast 6.92:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #663bc9;
Background color
Panel with #663bc9 background
background-color: #663bc9;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #663bc9;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 59, 201, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 59, 201, 0.45);
Border & gradient
Gradient panel
border: 3px solid #663bc9; background: linear-gradient(135deg, #663bc9, #C53BC9);