#664eee
a balanced, electric blue · warm · closest name: slateblue
RGB
102, 78, 238
HSL
249°, 83%, 62%
CMYK
57, 67, 0, 7
Luminance
0.1445
Every format
| HEX | #664eee |
| RGB | rgb(102, 78, 238) |
| HSL | hsl(249, 83%, 62%) |
| CMYK | cmyk(57%, 67%, 0%, 7%) |
| LAB | lab(44.9 52.1 -77.3) |
| LCH | lch(44.9 93.2 303.9) |
| OKLCH | oklch(0.547 0.228 282.6) |
Copy-ready code
/* CSS */
color: #664eee;
background-color: #664eee;
/* Tailwind (arbitrary) */
class="text-[#664eee] bg-[#664eee]"
/* SCSS */
$brand: #664eee;
/* SwiftUI */
Color(red: 0.400, green: 0.306, blue: 0.933)
/* Android */
Color.parseColor("#664eee")Accessibility — WCAG contrast
Aa
#664eee on white: 5.40:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#664eee on black: 3.89:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red40.0%
Green30.6%
Blue93.3%
CMYK percentages
Cyan57.1%
Magenta67.2%
Yellow0.0%
Key (black)6.7%
Color previews
#664eee text on a black background
contrast 3.89:1
Card sample
#664eee text on a white background
contrast 5.40:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #664eee;
Background color
Panel with #664eee background
background-color: #664eee;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #664eee;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(102, 78, 238, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(102, 78, 238, 0.45);
Border & gradient
Gradient panel
border: 3px solid #664eee; background: linear-gradient(135deg, #664eee, #D14EEE);