#0a397b
a dark, electric blue · cool · closest name: midnightblue
RGB
10, 57, 123
HSL
215°, 85%, 26%
CMYK
92, 54, 0, 52
Luminance
0.0442
Every format
| HEX | #0a397b |
| RGB | rgb(10, 57, 123) |
| HSL | hsl(215, 85%, 26%) |
| CMYK | cmyk(92%, 54%, 0%, 52%) |
| LAB | lab(25.0 12.6 -41.7) |
| LCH | lch(25.0 43.5 286.8) |
| OKLCH | oklch(0.358 0.123 258.5) |
Copy-ready code
/* CSS */
color: #0a397b;
background-color: #0a397b;
/* Tailwind (arbitrary) */
class="text-[#0a397b] bg-[#0a397b]"
/* SCSS */
$brand: #0a397b;
/* SwiftUI */
Color(red: 0.039, green: 0.224, blue: 0.482)
/* Android */
Color.parseColor("#0a397b")Accessibility — WCAG contrast
Aa
#0a397b on white: 11.15:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#0a397b on black: 1.88:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red3.9%
Green22.4%
Blue48.2%
CMYK percentages
Cyan91.9%
Magenta53.7%
Yellow0.0%
Key (black)51.8%
Color previews
#0a397b text on a black background
contrast 1.88:1
Card sample
#0a397b text on a white background
contrast 11.15:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0a397b;
Background color
Panel with #0a397b background
background-color: #0a397b;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0a397b;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(10, 57, 123, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(10, 57, 123, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0a397b; background: linear-gradient(135deg, #0a397b, #260A7B);