#3937cf
a balanced, vivid blue · warm · closest name: navy
RGB
57, 55, 207
HSL
241°, 61%, 51%
CMYK
73, 73, 0, 19
Luminance
0.0811
Every format
| HEX | #3937cf |
| RGB | rgb(57, 55, 207) |
| HSL | hsl(241, 61%, 51%) |
| CMYK | cmyk(73%, 73%, 0%, 19%) |
| LAB | lab(34.2 49.6 -77.3) |
| LCH | lch(34.2 91.8 302.7) |
| OKLCH | oklch(0.454 0.224 273.5) |
Copy-ready code
/* CSS */
color: #3937cf;
background-color: #3937cf;
/* Tailwind (arbitrary) */
class="text-[#3937cf] bg-[#3937cf]"
/* SCSS */
$brand: #3937cf;
/* SwiftUI */
Color(red: 0.224, green: 0.216, blue: 0.812)
/* Android */
Color.parseColor("#3937cf")Accessibility — WCAG contrast
Aa
#3937cf on white: 8.01:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#3937cf on black: 2.62:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green21.6%
Blue81.2%
CMYK percentages
Cyan72.5%
Magenta73.4%
Yellow0.0%
Key (black)18.8%
Color previews
#3937cf text on a black background
contrast 2.62:1
Card sample
#3937cf text on a white background
contrast 8.01:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3937cf;
Background color
Panel with #3937cf background
background-color: #3937cf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3937cf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 55, 207, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 55, 207, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3937cf; background: linear-gradient(135deg, #3937cf, #9E37CF);