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="d-flex flex-wrap gap-2">
  <div class="bg-primary text-white rounded-3 p-3 opacity-100">
    <code class="small">100</code>
  </div>
  <div class="bg-primary text-white rounded-3 p-3 opacity-75">
    <code class="small">75</code>
  </div>
  <div class="bg-primary text-white rounded-3 p-3 opacity-50">
    <code class="small">50</code>
  </div>
  <div class="bg-primary text-white rounded-3 p-3 opacity-25">
    <code class="small">25</code>
  </div>
  <div class="bg-primary text-white rounded-3 p-3 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-3 p-3 opacity-50 fw-semibold">
      opacity-50
    </div>
  </div>
  <div class="col-sm-6">
    <div class="bg-success bg-opacity-50 rounded-3 p-3 fw-semibold">
      bg-opacity-50
    </div>
  </div>
</div>

3Disabled looking card

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

Group classes

Available

Recovery spa

Coming soon

<div class="row g-2">
  <div class="col-sm-6">
    <div class="border rounded-3 p-3">
      <div class="fw-semibold">
        Group classes
      </div>
      <div class="small text-body-secondary">
        Available
      </div>
    </div>
  </div>
  <div class="col-sm-6">
    <div class="border rounded-3 p-3 opacity-50 pe-none" aria-disabled="true">
      <div class="fw-semibold">
        Recovery spa
      </div>
      <div class="small text-body-secondary">
        Coming soon
      </div>
    </div>
  </div>
</div>

4Faded image gallery

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

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

5Logo wall

Partner logos at opacity-50 look calm and uniform.

<div class="d-flex flex-wrap justify-content-center align-items-center gap-4">
  <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.

Recovery spa
Online coaching
Online coaching

<ul class="list-unstyled mb-0 d-grid gap-2">
  <li class="opacity-50 text-decoration-line-through"><i class="bi bi-check-square" aria-hidden="true"></i> Recovery spa</li>
  <li class="opacity-50 text-decoration-line-through"><i class="bi bi-check-square" aria-hidden="true"></i> Online coaching</li>
  <li><i class="bi bi-square" aria-hidden="true"></i> Online coaching</li>
</ul>

7Watermark text

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

Classes that keep you coming back

This calm update helps time back in your day all year round.

<div class="position-relative overflow-hidden rounded-4 bg-body-tertiary p-4">
  <div class="position-absolute top-50 start-50 translate-middle display-1 fw-bold text-primary opacity-25 text-nowrap pe-none" aria-hidden="true">
    2015
  </div>
  <h3 class="position-relative h5 fw-semibold mb-1">Classes that keep you coming back</h3>
  <p class="position-relative small mb-0">This calm update helps time back in your day all year round.</p>
</div>

8Muted icons

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

56 Orchard Close, Singapore
+1 (555) 897-8986
mason.rossi@example.com

<ul class="list-unstyled mb-0 d-grid gap-2">
  <li><span class="opacity-50 me-2"><i class="bi bi-geo-alt" aria-hidden="true"></i></span>56 Orchard Close, Singapore</li>
  <li><span class="opacity-50 me-2"><i class="bi bi-telephone" aria-hidden="true"></i></span>+1 (555) 897-8986</li>
  <li><span class="opacity-50 me-2"><i class="bi bi-envelope" aria-hidden="true"></i></span>mason.rossi@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="d-flex flex-wrap gap-3 small fw-medium">
  <span class="d-flex align-items-center gap-1"><span class="badge rounded-pill text-bg-success">1</span> Cart</span> <span class="d-flex align-items-center gap-1"><span class="badge rounded-pill text-bg-primary">2</span> Shipping</span> <span class="d-flex align-items-center gap-1 opacity-50"><span class="badge rounded-pill text-bg-secondary">3</span> Payment</span> <span class="d-flex align-items-center gap-1 opacity-50"><span class="badge rounded-pill 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="d-flex gap-2">
  <div class="bg-info-subtle rounded-3 p-3">
    <code class="small">A</code>
  </div>
  <div class="bg-info-subtle rounded-3 p-3 opacity-0">
    <code class="small">B</code>
  </div>
  <div class="bg-info-subtle rounded-3 p-3">
    <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.

<div class="bg-primary rounded-4 overflow-hidden" style="max-width:24rem">
  <img src="../assets/img/photo-8.svg" alt="Classes that keep you coming back" class="w-100 d-block opacity-75"> 
</div>

12Secondary actions

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

<div class="d-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.

Yoga retreat

$78.86

Sold out

Nutrition guide

$46.12

<div class="row g-3">
  <div class="col-6 col-md-4">
    <div class="border rounded-3 p-2">
      <img src="../assets/img/product-1.svg" alt="Monthly pass" class="w-100 rounded-2">
      <div class="small fw-medium mt-2 text-truncate">
        Yoga retreat
      </div>
      <div class="small">
        $78.86
      </div>
    </div>
  </div>
  <div class="col-6 col-md-4">
    <div class="border rounded-3 p-2 position-relative">
      <img src="../assets/img/product-2.svg" alt="10-class pack" class="w-100 rounded-2 opacity-50"><span class="badge text-bg-dark position-absolute top-0 start-0 m-3">Sold out</span>
      <div class="small fw-medium mt-2 text-truncate opacity-50">
        Nutrition guide
      </div>
      <div class="small opacity-50">
        $46.12
      </div>
    </div>
  </div>
</div>

14Placeholder skeleton

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

<div class="d-flex gap-3 align-items-center" aria-hidden="true">
  <div class="bg-body-secondary rounded-circle opacity-75" style="width:48px;height:48px">
  </div>
  <div class="flex-grow-1">
    <div class="bg-body-secondary rounded-pill mb-2 w-50 opacity-75" style="height:10px">
    </div>
    <div class="bg-body-secondary rounded-pill w-75 opacity-50" style="height:10px">
    </div>
  </div>
</div>

15Fading list

Older entries step down in opacity to suggest age.

Train smarter, feel better
Train smarter, feel better
Move more, stress less
Train smarter, feel better

<ol class="list-unstyled mb-0 d-grid gap-1">
  <li class="opacity-100">Train smarter, feel better</li>
  <li class="opacity-75">Train smarter, feel better</li>
  <li class="opacity-50">Move more, stress less</li>
  <li class="opacity-25">Train smarter, feel better</li>
</ol>

16Background pattern dots

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

Classes that keep you coming back

A simple journey gives results you can measure with friendly support.

<div class="position-relative overflow-hidden text-bg-primary rounded-4 p-4">
  <span class="position-absolute top-0 end-0 display-1 opacity-25 me-3" aria-hidden="true"><i class="bi bi-stars" aria-hidden="true"></i></span> 
  <h3 class="h5 fw-semibold position-relative">Classes that keep you coming back</h3>
  <p class="small mb-0 position-relative">A simple journey gives results you can measure with friendly support.</p>
</div>

17Unavailable time slots

Booked slots at opacity-25 among free slots.

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

<div class="d-flex flex-wrap gap-2">
  <span class="border rounded-2 px-3 py-1 small">09:00</span><span class="border rounded-2 px-3 py-1 small opacity-25">09:30</span> <span class="border rounded-2 px-3 py-1 small">10:00</span><span class="border rounded-2 px-3 py-1 small opacity-25">10:30</span> <span class="border border-primary bg-primary-subtle rounded-2 px-3 py-1 small">11:00</span><span class="border rounded-2 px-3 py-1 small">11:30</span> 
</div>

18Subdued footnote

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

Our online coaching connects results you can measure on any device. This bright idea lets customers coming back in just a few clicks.

* A modern release keeps complex tasks into simple steps from the very first day.

<div>
  <p class="mb-1">Our online coaching connects results you can measure on any device. This bright idea lets customers coming back in just a few clicks.</p>
  <p class="small opacity-75 mb-0">* A modern release keeps complex tasks into simple steps from the very first day.</p>
</div>

19Overlay controls

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

<div class="position-relative rounded-4 overflow-hidden" style="max-width:26rem">
  <img src="../assets/img/wide-7.svg" alt="What&#39;s new in strength" class="w-100 d-block"> 
  <div class="position-absolute bottom-0 start-50 translate-middle-x mb-3 bg-dark bg-opacity-50 rounded-pill px-3 py-1 d-flex gap-3 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.

Theo Fischer
Ivy Tanaka (inactive)

<ul class="list-unstyled mb-0 d-grid gap-2">
  <li class="d-flex align-items-center gap-2"><img src="../assets/img/avatar-4.svg" alt="" width="32" height="32" class="rounded-circle"><span>Theo Fischer</span></li>
  <li class="d-flex align-items-center gap-2 opacity-50"><img src="../assets/img/avatar-5.svg" alt="" width="32" height="32" class="rounded-circle"><span>Ivy Tanaka <small>(inactive)</small></span></li>
</ul>