#3900eb
a balanced, electric blue · warm · closest name: blue
RGB
57, 0, 235
HSL
255°, 100%, 46%
CMYK
76, 100, 0, 8
Luminance
0.0687
Every format
| HEX | #3900eb |
| RGB | rgb(57, 0, 235) |
| HSL | hsl(255, 100%, 46%) |
| CMYK | cmyk(76%, 100%, 0%, 8%) |
| LAB | lab(31.5 75.2 -97.8) |
| LCH | lch(31.5 123.4 307.5) |
| OKLCH | oklch(0.445 0.283 273.5) |
Copy-ready code
/* CSS */
color: #3900eb;
background-color: #3900eb;
/* Tailwind (arbitrary) */
class="text-[#3900eb] bg-[#3900eb]"
/* SCSS */
$brand: #3900eb;
/* SwiftUI */
Color(red: 0.224, green: 0.000, blue: 0.922)
/* Android */
Color.parseColor("#3900eb")Accessibility — WCAG contrast
Aa
#3900eb on white: 8.85:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#3900eb on black: 2.37:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green0.0%
Blue92.2%
CMYK percentages
Cyan75.7%
Magenta100.0%
Yellow0.0%
Key (black)7.8%
Color previews
#3900eb text on a black background
contrast 2.37:1
Card sample
#3900eb text on a white background
contrast 8.85:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3900eb;
Background color
Panel with #3900eb background
background-color: #3900eb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3900eb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 0, 235, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 0, 235, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3900eb; background: linear-gradient(135deg, #3900eb, #D600EB);