#370dfb
a balanced, electric blue · warm · closest name: blue
RGB
55, 13, 251
HSL
251°, 97%, 52%
CMYK
78, 95, 0, 2
Luminance
0.0807
Every format
| HEX | #370dfb |
| RGB | rgb(55, 13, 251) |
| HSL | hsl(251, 97%, 52%) |
| CMYK | cmyk(78%, 95%, 0%, 2%) |
| LAB | lab(34.1 77.0 -102.5) |
| LCH | lch(34.1 128.2 306.9) |
| OKLCH | oklch(0.468 0.296 271.7) |
Copy-ready code
/* CSS */
color: #370dfb;
background-color: #370dfb;
/* Tailwind (arbitrary) */
class="text-[#370dfb] bg-[#370dfb]"
/* SCSS */
$brand: #370dfb;
/* SwiftUI */
Color(red: 0.216, green: 0.051, blue: 0.984)
/* Android */
Color.parseColor("#370dfb")Accessibility — WCAG contrast
Aa
#370dfb on white: 8.04:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#370dfb on black: 2.61:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red21.6%
Green5.1%
Blue98.4%
CMYK percentages
Cyan78.1%
Magenta94.8%
Yellow0.0%
Key (black)1.6%
Color previews
#370dfb text on a black background
contrast 2.61:1
Card sample
#370dfb text on a white background
contrast 8.04:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #370dfb;
Background color
Panel with #370dfb background
background-color: #370dfb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #370dfb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(55, 13, 251, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(55, 13, 251, 0.45);
Border & gradient
Gradient panel
border: 3px solid #370dfb; background: linear-gradient(135deg, #370dfb, #D60DFB);