#3904fd
a balanced, electric blue · warm · closest name: blue
RGB
57, 4, 253
HSL
253°, 98%, 50%
CMYK
78, 98, 0, 1
Luminance
0.0805
Every format
| HEX | #3904fd |
| RGB | rgb(57, 4, 253) |
| HSL | hsl(253, 98%, 50%) |
| CMYK | cmyk(78%, 98%, 0%, 1%) |
| LAB | lab(34.1 78.8 -103.7) |
| LCH | lch(34.1 130.3 307.2) |
| OKLCH | oklch(0.468 0.300 272.2) |
Copy-ready code
/* CSS */
color: #3904fd;
background-color: #3904fd;
/* Tailwind (arbitrary) */
class="text-[#3904fd] bg-[#3904fd]"
/* SCSS */
$brand: #3904fd;
/* SwiftUI */
Color(red: 0.224, green: 0.016, blue: 0.992)
/* Android */
Color.parseColor("#3904fd")Accessibility — WCAG contrast
Aa
#3904fd on white: 8.05:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#3904fd on black: 2.61:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green1.6%
Blue99.2%
CMYK percentages
Cyan77.5%
Magenta98.4%
Yellow0.0%
Key (black)0.8%
Color previews
#3904fd text on a black background
contrast 2.61:1
Card sample
#3904fd text on a white background
contrast 8.05:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3904fd;
Background color
Panel with #3904fd background
background-color: #3904fd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3904fd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 4, 253, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 4, 253, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3904fd; background: linear-gradient(135deg, #3904fd, #DF04FD);