Opacity

Opacity utilities set the transparency of a whole element, content included: opacity-100, -75, -50, -25 and -0. Use them for disabled looks, faded thumbnails or decoration; when only a background or border should fade, use bg-opacity-* or border-opacity-* instead.

1Opacity scale

opacity-100, -75, -50, -25 and -0 make the whole element, content included, more transparent.

100

75

50

25

0

<div class="flex flex-wrap gap-2">
  <div class="bg-primary text-white rounded-lg p-4 opacity-100">
    <code class="small">100</code>
  </div>
  <div class="bg-primary text-white rounded-lg p-4 opacity-75">
    <code class="small">75</code>
  </div>
  <div class="bg-primary text-white rounded-lg p-4 opacity-50">
    <code class="small">50</code>
  </div>
  <div class="bg-primary text-white rounded-lg p-4 opacity-25">
    <code class="small">25</code>
  </div>
  <div class="bg-primary text-white rounded-lg p-4 opacity-0 border">
    <code class="small">0</code>
  </div>
</div>

2Opacity versus bg-opacity

opacity-50 fades the text too, bg-opacity-50 fades only the background.

opacity-50

bg-opacity-50

<div class="row g-2">
  <div class="col-sm-6">
    <div class="bg-success text-white rounded-lg p-4 opacity-50 font-semibold">
      opacity-50
    </div>
  </div>
  <div class="col-sm-6">
    <div class="bg-success/50 rounded-lg p-4 font-semibold">
      bg-opacity-50
    </div>
  </div>
</div>

3Disabled looking card

opacity-50 with pe-none shows an option that is not available yet.

UX research

Available

Content strategy

Coming soon

<div class="row g-2">
  <div class="col-sm-6">
    <div class="border rounded-lg p-4">
      <div class="font-semibold">
        UX research
      </div>
      <div class="small text-muted">
        Available
      </div>
    </div>
  </div>
  <div class="col-sm-6">
    <div class="border rounded-lg p-4 opacity-50 pointer-events-none" aria-disabled="true">
      <div class="font-semibold">
        Content strategy
      </div>
      <div class="small text-muted">
        Coming soon
      </div>
    </div>
  </div>
</div>

4Faded image gallery

Non-selected thumbnails at opacity-50, the active one at full opacity.

<div class="flex gap-2">
  <img src="../assets/img/square-1.svg" alt="Thumbnail 1" width="80" height="80" class="rounded-lg object-cover border border-2 border-primary"> <img src="../assets/img/square-2.svg" alt="Thumbnail 2" width="80" height="80" class="rounded-lg object-cover opacity-50"> <img src="../assets/img/square-3.svg" alt="Thumbnail 3" width="80" height="80" class="rounded-lg object-cover opacity-50"> 
</div>

5Logo wall

Partner logos at opacity-50 look calm and uniform.

<div class="flex flex-wrap justify-center items-center gap-6">
  <img src="../assets/img/logo-1.svg" alt="Partner logo" width="120" class="opacity-50"> <img src="../assets/img/logo-2.svg" alt="Partner logo" width="120" class="opacity-50"> <img src="../assets/img/logo-3.svg" alt="Partner logo" width="120" class="opacity-50"> <img src="../assets/img/logo-4.svg" alt="Partner logo" width="120" class="opacity-50"> 
</div>

6Completed tasks

Done items drop to opacity-50 and get a line through.

Brand identity
UX research
Brand identity

<ul class="list-unstyled mb-0 grid gap-2">
  <li class="opacity-50 line-through"><i class="bi bi-check-square-fill" aria-hidden="true"></i> Brand identity</li>
  <li class="opacity-50 line-through"><i class="bi bi-check-square-fill" aria-hidden="true"></i> UX research</li>
  <li><i class="bi bi-square-fill" aria-hidden="true"></i> Brand identity</li>
</ul>

7Watermark text

Huge text at opacity-25 behind a heading as a decorative watermark.

Digital products with personality

A smart journey makes results you can measure all year round.

<div class="relative overflow-hidden rounded-xl bg-surface-3 p-6">
  <div class="absolute top-1/2 start-1/2 -translate-x-1/2 -translate-y-1/2 display-1 font-bold text-primary opacity-25 whitespace-nowrap pointer-events-none" aria-hidden="true">
    2024
  </div>
  <h3 class="relative h5 font-semibold mb-1">Digital products with personality</h3>
  <p class="relative small mb-0">A smart journey makes results you can measure all year round.</p>
</div>

8Muted icons

Decorative icons at opacity-75 or -50 next to labels.

314 Maple Avenue, Austin
+1 (555) 132-6748
leo.kowalski@example.com

<ul class="list-unstyled mb-0 grid gap-2">
  <li><span class="opacity-50 me-2"><i class="bi bi-geo-alt-fill" aria-hidden="true"></i></span>314 Maple Avenue, Austin</li>
  <li><span class="opacity-50 me-2"><i class="bi bi-telephone-fill" aria-hidden="true"></i></span>+1 (555) 132-6748</li>
  <li><span class="opacity-50 me-2"><i class="bi bi-envelope-fill" aria-hidden="true"></i></span>leo.kowalski@example.com</li>
</ul>

9Inactive steps

Future steps of a progress indicator at opacity-50.

1 Cart 2 Shipping 3 Payment 4 Review

<div class="flex flex-wrap gap-4 small font-medium">
  <span class="flex items-center gap-1"><span class="badge rounded-full text-bg-success">1</span> Cart</span> <span class="flex items-center gap-1"><span class="badge rounded-full text-bg-primary">2</span> Shipping</span> <span class="flex items-center gap-1 opacity-50"><span class="badge rounded-full text-bg-secondary">3</span> Payment</span> <span class="flex items-center gap-1 opacity-50"><span class="badge rounded-full text-bg-secondary">4</span> Review</span> 
</div>

10Hidden but taking space

opacity-0 keeps the layout slot, so neighbours do not move.

A

B

C

<div class="flex gap-2">
  <div class="bg-info-subtle rounded-lg p-4">
    <code class="small">A</code>
  </div>
  <div class="bg-info-subtle rounded-lg p-4 opacity-0">
    <code class="small">B</code>
  </div>
  <div class="bg-info-subtle rounded-lg p-4">
    <code class="small">C</code>
  </div>
</div>

11Image tint over colour

An image at opacity-75 on a bg-primary parent picks up a brand tint.

Strategy, design and code under one roof

<div class="bg-primary rounded-xl overflow-hidden" style="max-width:24rem">
  <img src="../assets/img/photo-8.svg" alt="Strategy, design and code under one roof" class="w-full block opacity-75"> 
</div>

12Secondary actions

A low opacity button group for actions that should not compete with the main one.

<div class="flex flex-wrap gap-2">
  <button type="button" class="btn btn-primary">Save</button>
  <button type="button" class="btn btn-outline-secondary opacity-75">Duplicate</button>
  <button type="button" class="btn btn-outline-secondary opacity-50">Archive</button>
</div>

13Out of stock products

The sold out item is shown at opacity-50 with a label.

Website package

$71.61

Sold out

Video edit

$34.62

<div class="row g-3">
  <div class="col-6 col-md-4">
    <div class="border rounded-lg p-2">
      <img src="../assets/img/product-1.svg" alt="Social kit" class="w-full rounded-md">
      <div class="small font-medium mt-2 truncate">
        Website package
      </div>
      <div class="small">
        $71.61
      </div>
    </div>
  </div>
  <div class="col-6 col-md-4">
    <div class="border rounded-lg p-2 relative">
      <img src="../assets/img/product-2.svg" alt="Social kit" class="w-full rounded-md opacity-50"><span class="badge text-bg-dark absolute top-0 start-0 m-4">Sold out</span>
      <div class="small font-medium mt-2 truncate opacity-50">
        Video edit
      </div>
      <div class="small opacity-50">
        $34.62
      </div>
    </div>
  </div>
</div>

14Placeholder skeleton

Rows of bg-body-secondary at opacity-75 sketch content while it loads.

<div class="flex gap-4 items-center" aria-hidden="true">
  <div class="bg-surface-2 rounded-full opacity-75" style="width:48px;height:48px">
  </div>
  <div class="grow">
    <div class="bg-surface-2 rounded-full mb-2 w-1/2 opacity-75" style="height:10px">
    </div>
    <div class="bg-surface-2 rounded-full w-3/4 opacity-50" style="height:10px">
    </div>
  </div>
</div>

15Fading list

Older entries step down in opacity to suggest age.

We design brands people remember
Strategy, design and code under one roof
Digital products with personality
Bold ideas, beautifully executed

<ol class="list-unstyled mb-0 grid gap-1">
  <li class="opacity-100">We design brands people remember</li>
  <li class="opacity-75">Strategy, design and code under one roof</li>
  <li class="opacity-50">Digital products with personality</li>
  <li class="opacity-25">Bold ideas, beautifully executed</li>
</ol>

16Background pattern dots

Large icons at opacity-25 placed in a corner decorate a banner.

We design brands people remember

A fast update brings data easy to understand without extra tools.

<div class="relative overflow-hidden text-bg-primary rounded-xl p-6">
  <span class="absolute top-0 end-0 display-1 opacity-25 me-4" aria-hidden="true"><i class="bi bi-stars" aria-hidden="true"></i></span> 
  <h3 class="h5 font-semibold relative">We design brands people remember</h3>
  <p class="small mb-0 relative">A fast update brings data easy to understand without extra tools.</p>
</div>

17Unavailable time slots

Booked slots at opacity-25 among free slots.

09:0009:30 10:0010:30 11:0011:30

<div class="flex flex-wrap gap-2">
  <span class="border rounded-md px-4 py-1 small">09:00</span><span class="border rounded-md px-4 py-1 small opacity-25">09:30</span> <span class="border rounded-md px-4 py-1 small">10:00</span><span class="border rounded-md px-4 py-1 small opacity-25">10:30</span> <span class="border border-primary bg-primary-subtle rounded-md px-4 py-1 small">11:00</span><span class="border rounded-md px-4 py-1 small">11:30</span> 
</div>

18Subdued footnote

A small footnote at opacity-75 below the main content.

Our campaign production shows you focused on what matters at a fair price. The new global clients shows you focused on what matters all year round.

* Our motion graphics lets time back in your day with friendly support.

<div>
  <p class="mb-1">Our campaign production shows you focused on what matters at a fair price. The new global clients shows you focused on what matters all year round.</p>
  <p class="small opacity-75 mb-0">* Our motion graphics lets time back in your day with friendly support.</p>
</div>

19Overlay controls

Controls on top of an image sit on a dark pill at reduced background opacity.

<div class="relative rounded-xl overflow-hidden" style="max-width:26rem">
  <img src="../assets/img/wide-12.svg" alt="A guide to brand identity" class="w-full block"> 
  <div class="absolute bottom-0 start-1/2 -translate-x-1/2 mb-4 bg-dark/50 rounded-full px-4 py-1 flex gap-4 text-white">
    <span><i class="bi bi-skip-backward-fill" aria-hidden="true"></i></span><span><i class="bi bi-play-fill" aria-hidden="true"></i></span><span><i class="bi bi-skip-forward-fill" aria-hidden="true"></i></span> 
  </div>
</div>

20Avatar of inactive member

Members who left the team are shown at opacity-50.

Kenji Alvarez
Sofia Whitaker (inactive)

<ul class="list-unstyled mb-0 grid gap-2">
  <li class="flex items-center gap-2"><img src="../assets/img/avatar-4.svg" alt="" width="32" height="32" class="rounded-full"><span>Kenji Alvarez</span></li>
  <li class="flex items-center gap-2 opacity-50"><img src="../assets/img/avatar-5.svg" alt="" width="32" height="32" class="rounded-full"><span>Sofia Whitaker <small>(inactive)</small></span></li>
</ul>