#173a8c
a dark, vivid blue · cool · closest name: midnightblue
RGB
23, 58, 140
HSL
222°, 72%, 32%
CMYK
84, 59, 0, 45
Luminance
0.0510
Every format
| HEX | #173a8c |
| RGB | rgb(23, 58, 140) |
| HSL | hsl(222, 72%, 32%) |
| CMYK | cmyk(84%, 59%, 0%, 45%) |
| LAB | lab(27.0 20.1 -49.0) |
| LCH | lch(27.0 53.0 292.3) |
| OKLCH | oklch(0.378 0.142 263.6) |
Copy-ready code
/* CSS */
color: #173a8c;
background-color: #173a8c;
/* Tailwind (arbitrary) */
class="text-[#173a8c] bg-[#173a8c]"
/* SCSS */
$brand: #173a8c;
/* SwiftUI */
Color(red: 0.090, green: 0.227, blue: 0.549)
/* Android */
Color.parseColor("#173a8c")Accessibility — WCAG contrast
Aa
#173a8c on white: 10.39:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#173a8c on black: 2.02:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red9.0%
Green22.7%
Blue54.9%
CMYK percentages
Cyan83.6%
Magenta58.6%
Yellow0.0%
Key (black)45.1%
Color previews
#173a8c text on a black background
contrast 2.02:1
Card sample
#173a8c text on a white background
contrast 10.39:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #173a8c;
Background color
Panel with #173a8c background
background-color: #173a8c;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #173a8c;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(23, 58, 140, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(23, 58, 140, 0.45);
Border & gradient
Gradient panel
border: 3px solid #173a8c; background: linear-gradient(135deg, #173a8c, #42178C);