#3909cf
a dark, electric blue · warm · closest name: blue
RGB
57, 9, 207
HSL
255°, 92%, 42%
CMYK
73, 96, 0, 19
Luminance
0.0557
Every format
| HEX | #3909cf |
| RGB | rgb(57, 9, 207) |
| HSL | hsl(255, 92%, 42%) |
| CMYK | cmyk(73%, 96%, 0%, 19%) |
| LAB | lab(28.3 67.0 -87.0) |
| LCH | lch(28.3 109.8 307.6) |
| OKLCH | oklch(0.413 0.253 276.0) |
Copy-ready code
/* CSS */
color: #3909cf;
background-color: #3909cf;
/* Tailwind (arbitrary) */
class="text-[#3909cf] bg-[#3909cf]"
/* SCSS */
$brand: #3909cf;
/* SwiftUI */
Color(red: 0.224, green: 0.035, blue: 0.812)
/* Android */
Color.parseColor("#3909cf")Accessibility — WCAG contrast
Aa
#3909cf on white: 9.93:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#3909cf on black: 2.11:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green3.5%
Blue81.2%
CMYK percentages
Cyan72.5%
Magenta95.7%
Yellow0.0%
Key (black)18.8%
Color previews
#3909cf text on a black background
contrast 2.11:1
Card sample
#3909cf text on a white background
contrast 9.93:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3909cf;
Background color
Panel with #3909cf background
background-color: #3909cf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3909cf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 9, 207, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 9, 207, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3909cf; background: linear-gradient(135deg, #3909cf, #BD09CF);