#0a39ff
a balanced, electric blue · warm · closest name: blue
RGB
10, 57, 255
HSL
229°, 100%, 52%
CMYK
96, 78, 0, 0
Luminance
0.1021
Every format
| HEX | #0a39ff |
| RGB | rgb(10, 57, 255) |
| HSL | hsl(229, 100%, 52%) |
| CMYK | cmyk(96%, 78%, 0%, 0%) |
| LAB | lab(38.2 61.9 -98.0) |
| LCH | lch(38.2 115.9 302.3) |
| OKLCH | oklch(0.493 0.285 264.6) |
Copy-ready code
/* CSS */
color: #0a39ff;
background-color: #0a39ff;
/* Tailwind (arbitrary) */
class="text-[#0a39ff] bg-[#0a39ff]"
/* SCSS */
$brand: #0a39ff;
/* SwiftUI */
Color(red: 0.039, green: 0.224, blue: 1.000)
/* Android */
Color.parseColor("#0a39ff")Accessibility — WCAG contrast
Aa
#0a39ff on white: 6.90:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#0a39ff on black: 3.04:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red3.9%
Green22.4%
Blue100.0%
CMYK percentages
Cyan96.1%
Magenta77.6%
Yellow0.0%
Key (black)0.0%
Color previews
#0a39ff text on a black background
contrast 3.04:1
Card sample
#0a39ff text on a white background
contrast 6.90:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0a39ff;
Background color
Panel with #0a39ff background
background-color: #0a39ff;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0a39ff;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(10, 57, 255, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(10, 57, 255, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0a39ff; background: linear-gradient(135deg, #0a39ff, #7E0AFF);