Black-50

From Bootstrap - Demo Wiki
Color
Name Muted
Description Black color with 50% transparency used on text.
Provider Skin, BootstrapComponents
Prefixes text
Reference getbootstrap.com - color

Text

Code
<div class="p-3 text-black-50 bg-light" >
This is a div with semi-transparent black text over a light background!
</div>
Result

This is a div with semi-transparent black text over a light background!