#3b40df
a balanced, vivid blue · warm · closest name: slateblue
RGB
59, 64, 223
HSL
238°, 72%, 55%
CMYK
74, 71, 0, 13
Luminance
0.0992
Every format
| HEX | #3b40df |
| RGB | rgb(59, 64, 223) |
| HSL | hsl(238, 72%, 55%) |
| CMYK | cmyk(74%, 71%, 0%, 13%) |
| LAB | lab(37.7 50.0 -80.7) |
| LCH | lch(37.7 94.9 301.8) |
| OKLCH | oklch(0.484 0.234 272.2) |
Copy-ready code
/* CSS */
color: #3b40df;
background-color: #3b40df;
/* Tailwind (arbitrary) */
class="text-[#3b40df] bg-[#3b40df]"
/* SCSS */
$brand: #3b40df;
/* SwiftUI */
Color(red: 0.231, green: 0.251, blue: 0.875)
/* Android */
Color.parseColor("#3b40df")Accessibility — WCAG contrast
Aa
#3b40df on white: 7.04:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#3b40df on black: 2.98:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red23.1%
Green25.1%
Blue87.5%
CMYK percentages
Cyan73.5%
Magenta71.3%
Yellow0.0%
Key (black)12.5%
Color previews
#3b40df text on a black background
contrast 2.98:1
Card sample
#3b40df text on a white background
contrast 7.04:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3b40df;
Background color
Panel with #3b40df background
background-color: #3b40df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3b40df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(59, 64, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(59, 64, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3b40df; background: linear-gradient(135deg, #3b40df, #A33BDF);