#370fdf
a balanced, electric blue · warm · closest name: blue
RGB
55, 15, 223
HSL
252°, 87%, 47%
CMYK
75, 93, 0, 13
Luminance
0.0648
Every format
| HEX | #370fdf |
| RGB | rgb(55, 15, 223) |
| HSL | hsl(252, 87%, 47%) |
| CMYK | cmyk(75%, 93%, 0%, 13%) |
| LAB | lab(30.6 69.7 -92.5) |
| LCH | lch(30.6 115.8 307.0) |
| OKLCH | oklch(0.434 0.268 273.7) |
Copy-ready code
/* CSS */
color: #370fdf;
background-color: #370fdf;
/* Tailwind (arbitrary) */
class="text-[#370fdf] bg-[#370fdf]"
/* SCSS */
$brand: #370fdf;
/* SwiftUI */
Color(red: 0.216, green: 0.059, blue: 0.875)
/* Android */
Color.parseColor("#370fdf")Accessibility — WCAG contrast
Aa
#370fdf on white: 9.15:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#370fdf on black: 2.30:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red21.6%
Green5.9%
Blue87.5%
CMYK percentages
Cyan75.3%
Magenta93.3%
Yellow0.0%
Key (black)12.5%
Color previews
#370fdf text on a black background
contrast 2.30:1
Card sample
#370fdf text on a white background
contrast 9.15:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #370fdf;
Background color
Panel with #370fdf background
background-color: #370fdf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #370fdf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(55, 15, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(55, 15, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #370fdf; background: linear-gradient(135deg, #370fdf, #C20FDF);