#664df4
a balanced, electric blue · warm · closest name: slateblue
RGB
102, 77, 244
HSL
249°, 88%, 63%
CMYK
58, 68, 0, 4
Luminance
0.1466
Every format
| HEX | #664df4 |
| RGB | rgb(102, 77, 244) |
| HSL | hsl(249, 88%, 63%) |
| CMYK | cmyk(58%, 68%, 0%, 4%) |
| LAB | lab(45.2 54.4 -80.2) |
| LCH | lch(45.2 96.9 304.1) |
| OKLCH | oklch(0.551 0.236 282.2) |
Copy-ready code
/* CSS */
color: #664df4;
background-color: #664df4;
/* Tailwind (arbitrary) */
class="text-[#664df4] bg-[#664df4]"
/* SCSS */
$brand: #664df4;
/* SwiftUI */
Color(red: 0.400, green: 0.302, blue: 0.957)
/* Android */
Color.parseColor("#664df4")Accessibility — WCAG contrast
Aa
#664df4 on white: 5.34:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#664df4 on black: 3.93:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green30.2%
Blue95.7%
CMYK percentages
Cyan58.2%
Magenta68.4%
Yellow0.0%
Key (black)4.3%
Color previews
#664df4 text on a black background
contrast 3.93:1
Card sample
#664df4 text on a white background
contrast 5.34:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #664df4;
Background color
Panel with #664df4 background
background-color: #664df4;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #664df4;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 77, 244, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 77, 244, 0.45);
Border & gradient
Gradient panel
border: 3px solid #664df4; background: linear-gradient(135deg, #664df4, #D54DF4);