#663df4
a balanced, electric blue · warm · closest name: blue
RGB
102, 61, 244
HSL
253°, 89%, 60%
CMYK
58, 75, 0, 4
Luminance
0.1269
Every format
| HEX | #663df4 |
| RGB | rgb(102, 61, 244) |
| HSL | hsl(253, 89%, 60%) |
| CMYK | cmyk(58%, 75%, 0%, 4%) |
| LAB | lab(42.3 62.4 -84.9) |
| LCH | lch(42.3 105.4 306.3) |
| OKLCH | oklch(0.530 0.252 284.0) |
Copy-ready code
/* CSS */
color: #663df4;
background-color: #663df4;
/* Tailwind (arbitrary) */
class="text-[#663df4] bg-[#663df4]"
/* SCSS */
$brand: #663df4;
/* SwiftUI */
Color(red: 0.400, green: 0.239, blue: 0.957)
/* Android */
Color.parseColor("#663df4")Accessibility — WCAG contrast
Aa
#663df4 on white: 5.93:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#663df4 on black: 3.54:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green23.9%
Blue95.7%
CMYK percentages
Cyan58.2%
Magenta75.0%
Yellow0.0%
Key (black)4.3%
Color previews
#663df4 text on a black background
contrast 3.54:1
Card sample
#663df4 text on a white background
contrast 5.93:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #663df4;
Background color
Panel with #663df4 background
background-color: #663df4;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #663df4;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 61, 244, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 61, 244, 0.45);
Border & gradient
Gradient panel
border: 3px solid #663df4; background: linear-gradient(135deg, #663df4, #E03DF4);