#423bc9
a balanced, vivid blue · warm · closest name: slateblue
RGB
66, 59, 201
HSL
243°, 57%, 51%
CMYK
67, 71, 0, 21
Luminance
0.0850
Every format
| HEX | #423bc9 |
| RGB | rgb(66, 59, 201) |
| HSL | hsl(243, 57%, 51%) |
| CMYK | cmyk(67%, 71%, 0%, 21%) |
| LAB | lab(35.0 46.4 -72.4) |
| LCH | lch(35.0 86.0 302.6) |
| OKLCH | oklch(0.459 0.210 276.4) |
Copy-ready code
/* CSS */
color: #423bc9;
background-color: #423bc9;
/* Tailwind (arbitrary) */
class="text-[#423bc9] bg-[#423bc9]"
/* SCSS */
$brand: #423bc9;
/* SwiftUI */
Color(red: 0.259, green: 0.231, blue: 0.788)
/* Android */
Color.parseColor("#423bc9")Accessibility — WCAG contrast
Aa
#423bc9 on white: 7.78:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#423bc9 on black: 2.70:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green23.1%
Blue78.8%
CMYK percentages
Cyan67.2%
Magenta70.6%
Yellow0.0%
Key (black)21.2%
Color previews
#423bc9 text on a black background
contrast 2.70:1
Card sample
#423bc9 text on a white background
contrast 7.78:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #423bc9;
Background color
Panel with #423bc9 background
background-color: #423bc9;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #423bc9;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 59, 201, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 59, 201, 0.45);
Border & gradient
Gradient panel
border: 3px solid #423bc9; background: linear-gradient(135deg, #423bc9, #A13BC9);