#4239fd
a balanced, electric blue · warm · closest name: blue
RGB
66, 57, 253
HSL
243°, 98%, 61%
CMYK
74, 78, 0, 1
Luminance
0.1118
Every format
| HEX | #4239fd |
| RGB | rgb(66, 57, 253) |
| HSL | hsl(243, 98%, 61%) |
| CMYK | cmyk(74%, 78%, 0%, 1%) |
| LAB | lab(39.9 63.5 -94.1) |
| LCH | lch(39.9 113.5 304.0) |
| OKLCH | oklch(0.509 0.273 273.0) |
Copy-ready code
/* CSS */
color: #4239fd;
background-color: #4239fd;
/* Tailwind (arbitrary) */
class="text-[#4239fd] bg-[#4239fd]"
/* SCSS */
$brand: #4239fd;
/* SwiftUI */
Color(red: 0.259, green: 0.224, blue: 0.992)
/* Android */
Color.parseColor("#4239fd")Accessibility — WCAG contrast
Aa
#4239fd on white: 6.49:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#4239fd on black: 3.24:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green22.4%
Blue99.2%
CMYK percentages
Cyan73.9%
Magenta77.5%
Yellow0.0%
Key (black)0.8%
Color previews
#4239fd text on a black background
contrast 3.24:1
Card sample
#4239fd text on a white background
contrast 6.49:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #4239fd;
Background color
Panel with #4239fd background
background-color: #4239fd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #4239fd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 57, 253, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 57, 253, 0.45);
Border & gradient
Gradient panel
border: 3px solid #4239fd; background: linear-gradient(135deg, #4239fd, #C539FD);