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Color & background

Set a background color with contrasting foreground color.

Overview

Added in v5.2.0

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.

html

<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:

html

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

Or on cards:

html

<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>