Colored Linked
Change the alpha opacity of the link rgba() color value with utilities.
Link opacity
<p><a class="link-opacity-10" href="#">Link opacity 10</a></p>
<p><a class="link-opacity-25" href="#">Link opacity 25</a></p>
<p><a class="link-opacity-50" href="#">Link opacity 50</a></p>
<p><a class="link-opacity-75" href="#">Link opacity 75</a></p>
<p><a class="link-opacity-100" href="#">Link opacity 100</a></p>You can even change the opacity level on hover.
Link opacity
<p><a class="link-opacity-10-hover" href="#">Link hover opacity 10</a></p>
<p><a class="link-opacity-25-hover" href="#">Link hover opacity 25</a></p>
<p><a class="link-opacity-50-hover" href="#">Link hover opacity 50</a></p>
<p><a class="link-opacity-75-hover" href="#">Link hover opacity 75</a></p>
<p><a class="link-opacity-100-hover" href="#">Link hover opacity 100</a></p>Underline color
<p><a href="#" class="link-underline-primary">Primary underline</a></p>
<p><a href="#" class="link-underline-secondary">Secondary underline</a></p>
<p><a href="#" class="link-underline-success">Success underline</a></p>
<p><a href="#" class="link-underline-danger">Danger underline</a></p>
<p><a href="#" class="link-underline-warning">Warning underline</a></p>
<p><a href="#" class="link-underline-info">Info underline</a></p>
<p><a href="#" class="link-underline-light">Light underline</a></p>
<p><a href="#" class="link-underline-dark">Dark underline</a></p>Underline opacity
<p><a class="link-offset-2 link-underline link-underline-opacity-0"
href="#">Underline opacity 0</a></p>
<p><a class="link-offset-2 link-underline link-underline-opacity-10"
href="#">Underline opacity 10</a></p>
<p><a class="link-offset-2 link-underline link-underline-opacity-25"
href="#">Underline opacity 25</a></p>
<p><a class="link-offset-2 link-underline link-underline-opacity-50"
href="#">Underline opacity 50</a></p>
<p><a class="link-offset-2 link-underline link-underline-opacity-75"
href="#">Underline opacity 75</a></p>
<p><a class="link-offset-2 link-underline link-underline-opacity-100"
href="#">Underline opacity 100</a></p>Colored links
<p><a href="#"
class="link-primary link-offset-2 link-underline-opacity-25 link-underline-opacity-100-hover">Primary
link</a></p>
<p><a href="#"
class="link-secondary link-offset-2 link-underline-opacity-25 link-underline-opacity-100-hover">Secondary
link</a></p>
<p><a href="#"
class="link-success link-offset-2 link-underline-opacity-25 link-underline-opacity-100-hover">Success
link</a></p>
<p><a href="#"
class="link-danger link-offset-2 link-underline-opacity-25 link-underline-opacity-100-hover">Danger
link</a></p>
<p><a href="#"
class="link-warning link-offset-2 link-underline-opacity-25 link-underline-opacity-100-hover">Warning
link</a></p>
<p><a href="#"
class="link-info link-offset-2 link-underline-opacity-25 link-underline-opacity-100-hover">Info
link</a></p>
<p><a href="#"
class="link-light link-offset-2 link-underline-opacity-25 link-underline-opacity-100-hover">Light
link</a></p>
<p><a href="#"
class="link-dark link-offset-2 link-underline-opacity-25 link-underline-opacity-100-hover">Dark
link</a></p>
<p><a href="#"
class="link-body-emphasis link-offset-2 link-underline-opacity-25 link-underline-opacity-75-hover">Emphasis
link</a></p>