#0a3dbb
a dark, electric blue · cool · closest name: slateblue
RGB
10, 61, 187
HSL
223°, 90%, 39%
CMYK
95, 67, 0, 27
Luminance
0.0699
Every format
| HEX | #0a3dbb |
| RGB | rgb(10, 61, 187) |
| HSL | hsl(223, 90%, 39%) |
| CMYK | cmyk(95%, 67%, 0%, 27%) |
| LAB | lab(31.8 35.9 -69.6) |
| LCH | lch(31.8 78.3 297.3) |
| OKLCH | oklch(0.426 0.203 263.4) |
Copy-ready code
/* CSS */
color: #0a3dbb;
background-color: #0a3dbb;
/* Tailwind (arbitrary) */
class="text-[#0a3dbb] bg-[#0a3dbb]"
/* SCSS */
$brand: #0a3dbb;
/* SwiftUI */
Color(red: 0.039, green: 0.239, blue: 0.733)
/* Android */
Color.parseColor("#0a3dbb")Accessibility — WCAG contrast
Aa
#0a3dbb on white: 8.76:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#0a3dbb on black: 2.40:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red3.9%
Green23.9%
Blue73.3%
CMYK percentages
Cyan94.7%
Magenta67.4%
Yellow0.0%
Key (black)26.7%
Color previews
#0a3dbb text on a black background
contrast 2.40:1
Card sample
#0a3dbb text on a white background
contrast 8.76:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0a3dbb;
Background color
Panel with #0a3dbb background
background-color: #0a3dbb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0a3dbb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(10, 61, 187, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(10, 61, 187, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0a3dbb; background: linear-gradient(135deg, #0a3dbb, #4D0ABB);