#423fdf
a balanced, vivid blue · warm · closest name: slateblue
RGB
66, 63, 223
HSL
241°, 71%, 56%
CMYK
70, 72, 0, 13
Luminance
0.1004
Every format
| HEX | #423fdf |
| RGB | rgb(66, 63, 223) |
| HSL | hsl(241, 71%, 56%) |
| CMYK | cmyk(70%, 72%, 0%, 13%) |
| LAB | lab(37.9 51.2 -80.3) |
| LCH | lch(37.9 95.3 302.5) |
| OKLCH | oklch(0.486 0.233 274.3) |
Copy-ready code
/* CSS */
color: #423fdf;
background-color: #423fdf;
/* Tailwind (arbitrary) */
class="text-[#423fdf] bg-[#423fdf]"
/* SCSS */
$brand: #423fdf;
/* SwiftUI */
Color(red: 0.259, green: 0.247, blue: 0.875)
/* Android */
Color.parseColor("#423fdf")Accessibility — WCAG contrast
Aa
#423fdf on white: 6.98:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#423fdf on black: 3.01:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green24.7%
Blue87.5%
CMYK percentages
Cyan70.4%
Magenta71.7%
Yellow0.0%
Key (black)12.5%
Color previews
#423fdf text on a black background
contrast 3.01:1
Card sample
#423fdf text on a white background
contrast 6.98:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #423fdf;
Background color
Panel with #423fdf background
background-color: #423fdf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #423fdf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 63, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 63, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #423fdf; background: linear-gradient(135deg, #423fdf, #AD3FDF);