#0a1721
a deep, vivid blue · cool · closest name: black
RGB
10, 23, 33
HSL
206°, 54%, 8%
CMYK
70, 30, 0, 87
Luminance
0.0079
Every format
| HEX | #0a1721 |
| RGB | rgb(10, 23, 33) |
| HSL | hsl(206, 54%, 8%) |
| CMYK | cmyk(70%, 30%, 0%, 87%) |
| LAB | lab(7.1 -1.7 -8.7) |
| LCH | lch(7.1 8.8 258.8) |
| OKLCH | oklch(0.198 0.027 243.0) |
Copy-ready code
/* CSS */
color: #0a1721;
background-color: #0a1721;
/* Tailwind (arbitrary) */
class="text-[#0a1721] bg-[#0a1721]"
/* SCSS */
$brand: #0a1721;
/* SwiftUI */
Color(red: 0.039, green: 0.090, blue: 0.129)
/* Android */
Color.parseColor("#0a1721")Accessibility — WCAG contrast
Aa
#0a1721 on white: 18.14:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#0a1721 on black: 1.16:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red3.9%
Green9.0%
Blue12.9%
CMYK percentages
Cyan69.7%
Magenta30.3%
Yellow0.0%
Key (black)87.1%
Color previews
#0a1721 text on a black background
contrast 1.16:1
Card sample
#0a1721 text on a white background
contrast 18.14:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0a1721;
Background color
Panel with #0a1721 background
background-color: #0a1721;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0a1721;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(10, 23, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(10, 23, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0a1721; background: linear-gradient(135deg, #0a1721, #0C0A21);