Bootstrap/site/content/docs/5.3/utilities/link.md

---
layout: docs
title: Link
description: Link utilities are used to stylize your anchors to adjust their color, opacity, underline offset, underline color, and more.
group: utilities
toc: true
added: 5.3
---

## Link opacity

Change the alpha opacity of the link `rgba()` color value with utilities. Please be aware that changes to a color's opacity can lead to links with [*insufficient* contrast]({{< docsref "getting-started/accessibility#color-contrast" >}}).

{{< example >}}
<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>
{{< /example >}}

You can even change the opacity level on hover.

{{< example >}}
<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>
{{< /example >}}

## Link underlines

### Underline color

Change the underline's color independent of the link text color.

{{< example >}}
{{< link-underline-colors.inline >}}
{{- range (index $.Site.Data "theme-colors") }}
<p><a href="#" class="link-underline-{{ .name }}">{{ .name | title }} underline</a></p>
{{- end -}}
{{< /link-underline-colors.inline >}}
{{< /example >}}

### Underline offset

Change the underline's distance from your text. Offset is set in `em` units to automatically scale with the element's current `font-size`.

{{< example >}}
<p><a href="#">Default link</a></p>
<p><a class="link-offset-1" href="#">Offset 1 link</a></p>
<p><a class="link-offset-2" href="#">Offset 2 link</a></p>
<p><a class="link-offset-3" href="#">Offset 3 link</a></p>
{{< /example >}}

### Underline opacity

Change the underline's opacity. Requires adding `.link-underline` to first set an `rgba()` color we use to then modify the alpha opacity.

{{< example >}}
<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>
{{< /example >}}

### Hover variants

Just like the `.link-opacity-*-hover` utilities, `.link-offset` and `.link-underline-opacity` utilities include `:hover` variants by default. Mix and match to create unique link styles.

{{< example >}}
<a class="link-offset-2 link-offset-3-hover link-underline link-underline-opacity-0 link-underline-opacity-75-hover" href="#">
  Underline opacity 0
</a>
{{< /example >}}

## Colored links

[Colored link helpers]({{< docsref "/helpers/colored-links/" >}}) have been updated to pair with our link utilities. Use the new utilities to modify the link opacity, underline opacity, and underline offset.

{{< example >}}
{{< colored-links.inline >}}
{{- range (index $.Site.Data "theme-colors") }}
<p><a href="#" class="link-{{ .name }} link-offset-2 link-underline-opacity-25 link-underline-opacity-100-hover">{{ .name | title }} link</a></p>
{{- end -}}
{{< /colored-links.inline >}}
<p><a href="#" class="link-body-emphasis link-offset-2 link-underline-opacity-25 link-underline-opacity-75-hover">Emphasis link</a></p>
{{< /example >}}

{{< callout info >}}
{{< partial "callouts/warning-color-assistive-technologies.md" >}}
{{< /callout >}}

## CSS

In addition to the following Sass functionality, consider reading about our included [CSS custom properties]({{< docsref "/customize/css-variables" >}}) (aka CSS variables) for colors and more.

### Sass utilities API

Link utilities are declared in our utilities API in `scss/_utilities.scss`. [Learn how to use the utilities API.]({{< docsref "/utilities/api#using-the-api" >}})

{{< scss-docs name="utils-links" file="scss/_utilities.scss" >}}