#173df4
a balanced, electric blue · warm · closest name: blue
RGB
23, 61, 244
HSL
230°, 91%, 52%
CMYK
91, 75, 0, 4
Luminance
0.1005
Every format
| HEX | #173df4 |
| RGB | rgb(23, 61, 244) |
| HSL | hsl(230, 91%, 52%) |
| CMYK | cmyk(91%, 75%, 0%, 4%) |
| LAB | lab(37.9 56.5 -92.3) |
| LCH | lch(37.9 108.2 301.5) |
| OKLCH | oklch(0.488 0.269 265.4) |
Copy-ready code
/* CSS */
color: #173df4;
background-color: #173df4;
/* Tailwind (arbitrary) */
class="text-[#173df4] bg-[#173df4]"
/* SCSS */
$brand: #173df4;
/* SwiftUI */
Color(red: 0.090, green: 0.239, blue: 0.957)
/* Android */
Color.parseColor("#173df4")Accessibility — WCAG contrast
Aa
#173df4 on white: 6.98:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#173df4 on black: 3.01:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red9.0%
Green23.9%
Blue95.7%
CMYK percentages
Cyan90.6%
Magenta75.0%
Yellow0.0%
Key (black)4.3%
Color previews
#173df4 text on a black background
contrast 3.01:1
Card sample
#173df4 text on a white background
contrast 6.98:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #173df4;
Background color
Panel with #173df4 background
background-color: #173df4;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #173df4;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(23, 61, 244, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(23, 61, 244, 0.45);
Border & gradient
Gradient panel
border: 3px solid #173df4; background: linear-gradient(135deg, #173df4, #8517F4);