#370bc9
a dark, electric blue · warm · closest name: blue
RGB
55, 11, 201
HSL
254°, 90%, 42%
CMYK
73, 95, 0, 21
Luminance
0.0527
Every format
| HEX | #370bc9 |
| RGB | rgb(55, 11, 201) |
| HSL | hsl(254, 90%, 42%) |
| CMYK | cmyk(73%, 95%, 0%, 21%) |
| LAB | lab(27.5 65.0 -84.9) |
| LCH | lch(27.5 106.9 307.5) |
| OKLCH | oklch(0.405 0.246 275.9) |
Copy-ready code
/* CSS */
color: #370bc9;
background-color: #370bc9;
/* Tailwind (arbitrary) */
class="text-[#370bc9] bg-[#370bc9]"
/* SCSS */
$brand: #370bc9;
/* SwiftUI */
Color(red: 0.216, green: 0.043, blue: 0.788)
/* Android */
Color.parseColor("#370bc9")Accessibility — WCAG contrast
Aa
#370bc9 on white: 10.23:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#370bc9 on black: 2.05:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red21.6%
Green4.3%
Blue78.8%
CMYK percentages
Cyan72.6%
Magenta94.5%
Yellow0.0%
Key (black)21.2%
Color previews
#370bc9 text on a black background
contrast 2.05:1
Card sample
#370bc9 text on a white background
contrast 10.23:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #370bc9;
Background color
Panel with #370bc9 background
background-color: #370bc9;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #370bc9;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(55, 11, 201, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(55, 11, 201, 0.45);
Border & gradient
Gradient panel
border: 3px solid #370bc9; background: linear-gradient(135deg, #370bc9, #B60BC9);