#3700f8
a balanced, electric blue · warm · closest name: blue
RGB
55, 0, 248
HSL
253°, 100%, 49%
CMYK
78, 100, 0, 3
Luminance
0.0759
Every format
| HEX | #3700f8 |
| RGB | rgb(55, 0, 248) |
| HSL | hsl(253, 100%, 49%) |
| CMYK | cmyk(78%, 100%, 0%, 3%) |
| LAB | lab(33.1 78.2 -102.5) |
| LCH | lch(33.1 128.9 307.3) |
| OKLCH | oklch(0.460 0.296 272.0) |
Copy-ready code
/* CSS */
color: #3700f8;
background-color: #3700f8;
/* Tailwind (arbitrary) */
class="text-[#3700f8] bg-[#3700f8]"
/* SCSS */
$brand: #3700f8;
/* SwiftUI */
Color(red: 0.216, green: 0.000, blue: 0.973)
/* Android */
Color.parseColor("#3700f8")Accessibility — WCAG contrast
Aa
#3700f8 on white: 8.34:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#3700f8 on black: 2.52:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red21.6%
Green0.0%
Blue97.3%
CMYK percentages
Cyan77.8%
Magenta100.0%
Yellow0.0%
Key (black)2.7%
Color previews
#3700f8 text on a black background
contrast 2.52:1
Card sample
#3700f8 text on a white background
contrast 8.34:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3700f8;
Background color
Panel with #3700f8 background
background-color: #3700f8;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3700f8;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(55, 0, 248, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(55, 0, 248, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3700f8; background: linear-gradient(135deg, #3700f8, #DC00F8);