#4239eb
a balanced, electric blue · warm · closest name: blue
RGB
66, 57, 235
HSL
243°, 82%, 57%
CMYK
72, 76, 0, 8
Luminance
0.1008
Every format
| HEX | #4239eb |
| RGB | rgb(66, 57, 235) |
| HSL | hsl(243, 82%, 57%) |
| CMYK | cmyk(72%, 76%, 0%, 8%) |
| LAB | lab(38.0 58.1 -87.0) |
| LCH | lch(38.0 104.7 303.7) |
| OKLCH | oklch(0.491 0.252 274.1) |
Copy-ready code
/* CSS */
color: #4239eb;
background-color: #4239eb;
/* Tailwind (arbitrary) */
class="text-[#4239eb] bg-[#4239eb]"
/* SCSS */
$brand: #4239eb;
/* SwiftUI */
Color(red: 0.259, green: 0.224, blue: 0.922)
/* Android */
Color.parseColor("#4239eb")Accessibility — WCAG contrast
Aa
#4239eb on white: 6.96:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#4239eb on black: 3.02:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green22.4%
Blue92.2%
CMYK percentages
Cyan71.9%
Magenta75.7%
Yellow0.0%
Key (black)7.8%
Color previews
#4239eb text on a black background
contrast 3.02:1
Card sample
#4239eb text on a white background
contrast 6.96:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #4239eb;
Background color
Panel with #4239eb background
background-color: #4239eb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #4239eb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 57, 235, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 57, 235, 0.45);
Border & gradient
Gradient panel
border: 3px solid #4239eb; background: linear-gradient(135deg, #4239eb, #B939EB);