#3758df
a balanced, vivid blue · warm · closest name: royalblue
RGB
55, 88, 223
HSL
228°, 72%, 55%
CMYK
75, 61, 0, 13
Luminance
0.1312
Every format
| HEX | #3758df |
| RGB | rgb(55, 88, 223) |
| HSL | hsl(228, 72%, 55%) |
| CMYK | cmyk(75%, 61%, 0%, 13%) |
| LAB | lab(42.9 35.1 -72.1) |
| LCH | lch(42.9 80.2 295.9) |
| OKLCH | oklch(0.522 0.208 267.7) |
Copy-ready code
/* CSS */
color: #3758df;
background-color: #3758df;
/* Tailwind (arbitrary) */
class="text-[#3758df] bg-[#3758df]"
/* SCSS */
$brand: #3758df;
/* SwiftUI */
Color(red: 0.216, green: 0.345, blue: 0.875)
/* Android */
Color.parseColor("#3758df")Accessibility — WCAG contrast
Aa
#3758df on white: 5.79:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3758df on black: 3.62:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red21.6%
Green34.5%
Blue87.5%
CMYK percentages
Cyan75.3%
Magenta60.5%
Yellow0.0%
Key (black)12.5%
Color previews
#3758df text on a black background
contrast 3.62:1
Card sample
#3758df text on a white background
contrast 5.79:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3758df;
Background color
Panel with #3758df background
background-color: #3758df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3758df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(55, 88, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(55, 88, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3758df; background: linear-gradient(135deg, #3758df, #8637DF);