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Overview

Added in v4.2.2

Color and background helpers combine the power of our .text-* utilities and .bg-* utilities in one class. Using our Sass color-contrast() function, we automatically determine a contrasting color for a particular background-color.

Heads up! There’s currently no support for a CSS-native color-contrast function, so we use our own via Sass. This means that customizing our theme colors via CSS variables may cause color contrast issues with these utilities.
Primary with contrasting color
Secondary with contrasting color
Success with contrasting color
Danger with contrasting color
Warning with contrasting color
Info with contrasting color
Light with contrasting color
Dark with contrasting color
<div class="text-bg-primary p-3">Primary with contrasting color</div>
<div class="text-bg-secondary p-3">Secondary with contrasting color</div>
<div class="text-bg-success p-3">Success with contrasting color</div>
<div class="text-bg-danger p-3">Danger with contrasting color</div>
<div class="text-bg-warning p-3">Warning with contrasting color</div>
<div class="text-bg-info p-3">Info with contrasting color</div>
<div class="text-bg-light p-3">Light with contrasting color</div>
<div class="text-bg-dark p-3">Dark with contrasting color</div>

With components

Use them in place of combined .text-* and .bg-* classes, like on badges:

Primary Info
<span class="badge text-bg-primary">Primary</span>
<span class="badge text-bg-info">Info</span>

Or on cards:

Header

Some quick example text to build on the card title and make up the bulk of the card's content.

Header

Some quick example text to build on the card title and make up the bulk of the card's content.

<div class="card text-bg-primary mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body">
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card text-bg-info mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body">
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>