#3b51df
a balanced, vivid blue · warm · closest name: slateblue
RGB
59, 81, 223
HSL
232°, 72%, 55%
CMYK
74, 64, 0, 13
Luminance
0.1214
Every format
| HEX | #3b51df |
| RGB | rgb(59, 81, 223) |
| HSL | hsl(232, 72%, 55%) |
| CMYK | cmyk(74%, 64%, 0%, 13%) |
| LAB | lab(41.4 39.9 -74.5) |
| LCH | lch(41.4 84.5 298.1) |
| OKLCH | oklch(0.511 0.215 269.9) |
Copy-ready code
/* CSS */
color: #3b51df;
background-color: #3b51df;
/* Tailwind (arbitrary) */
class="text-[#3b51df] bg-[#3b51df]"
/* SCSS */
$brand: #3b51df;
/* SwiftUI */
Color(red: 0.231, green: 0.318, blue: 0.875)
/* Android */
Color.parseColor("#3b51df")Accessibility — WCAG contrast
Aa
#3b51df on white: 6.13:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3b51df on black: 3.43:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red23.1%
Green31.8%
Blue87.5%
CMYK percentages
Cyan73.5%
Magenta63.7%
Yellow0.0%
Key (black)12.5%
Color previews
#3b51df text on a black background
contrast 3.43:1
Card sample
#3b51df text on a white background
contrast 6.13:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3b51df;
Background color
Panel with #3b51df background
background-color: #3b51df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3b51df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(59, 81, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(59, 81, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3b51df; background: linear-gradient(135deg, #3b51df, #923BDF);