#3739fd
a balanced, electric blue · warm · closest name: blue
RGB
55, 57, 253
HSL
239°, 98%, 60%
CMYK
78, 78, 0, 1
Luminance
0.1083
Every format
| HEX | #3739fd |
| RGB | rgb(55, 57, 253) |
| HSL | hsl(239, 98%, 60%) |
| CMYK | cmyk(78%, 78%, 0%, 1%) |
| LAB | lab(39.3 62.8 -95.0) |
| LCH | lch(39.3 113.9 303.5) |
| OKLCH | oklch(0.504 0.275 270.5) |
Copy-ready code
/* CSS */
color: #3739fd;
background-color: #3739fd;
/* Tailwind (arbitrary) */
class="text-[#3739fd] bg-[#3739fd]"
/* SCSS */
$brand: #3739fd;
/* SwiftUI */
Color(red: 0.216, green: 0.224, blue: 0.992)
/* Android */
Color.parseColor("#3739fd")Accessibility — WCAG contrast
Aa
#3739fd on white: 6.63:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3739fd on black: 3.17:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red21.6%
Green22.4%
Blue99.2%
CMYK percentages
Cyan78.3%
Magenta77.5%
Yellow0.0%
Key (black)0.8%
Color previews
#3739fd text on a black background
contrast 3.17:1
Card sample
#3739fd text on a white background
contrast 6.63:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3739fd;
Background color
Panel with #3739fd background
background-color: #3739fd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3739fd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(55, 57, 253, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(55, 57, 253, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3739fd; background: linear-gradient(135deg, #3739fd, #B937FD);