#664cd3
a balanced, vivid blue · warm · closest name: slateblue
RGB
102, 76, 211
HSL
252°, 61%, 56%
CMYK
52, 64, 0, 17
Luminance
0.1270
Every format
| HEX | #664cd3 |
| RGB | rgb(102, 76, 211) |
| HSL | hsl(252, 61%, 56%) |
| CMYK | cmyk(52%, 64%, 0%, 17%) |
| LAB | lab(42.3 45.2 -66.2) |
| LCH | lch(42.3 80.1 304.3) |
| OKLCH | oklch(0.522 0.198 286.2) |
Copy-ready code
/* CSS */
color: #664cd3;
background-color: #664cd3;
/* Tailwind (arbitrary) */
class="text-[#664cd3] bg-[#664cd3]"
/* SCSS */
$brand: #664cd3;
/* SwiftUI */
Color(red: 0.400, green: 0.298, blue: 0.827)
/* Android */
Color.parseColor("#664cd3")Accessibility — WCAG contrast
Aa
#664cd3 on white: 5.93:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#664cd3 on black: 3.54:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green29.8%
Blue82.7%
CMYK percentages
Cyan51.7%
Magenta64.0%
Yellow0.0%
Key (black)17.3%
Color previews
#664cd3 text on a black background
contrast 3.54:1
Card sample
#664cd3 text on a white background
contrast 5.93:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #664cd3;
Background color
Panel with #664cd3 background
background-color: #664cd3;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #664cd3;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 76, 211, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 76, 211, 0.45);
Border & gradient
Gradient panel
border: 3px solid #664cd3; background: linear-gradient(135deg, #664cd3, #C04CD3);