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.

Certificates

Available

Online courses

Coming soon

<div class="row g-2">
  <div class="col-sm-6">
    <div class="border rounded-3 p-3">
      <div class="fw-semibold">
        Certificates
      </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">
        Online courses
      </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.

Mentoring
Career coaching
Mentoring

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

7Watermark text

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

Study smarter with guided paths

Our mentoring brings the whole team on the same page wherever you are.

<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">
    2023
  </div>
  <h3 class="position-relative h5 fw-semibold mb-1">Study smarter with guided paths</h3>
  <p class="position-relative small mb-0">Our mentoring brings the whole team on the same page wherever you are.</p>
</div>

8Muted icons

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

378 Willow Way, Edinburgh
+1 (555) 497-7139
priya.alvarez@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-fill" aria-hidden="true"></i></span>378 Willow Way, Edinburgh</li>
  <li><span class="opacity-50 me-2"><i class="bi bi-telephone-fill" aria-hidden="true"></i></span>+1 (555) 497-7139</li>
  <li><span class="opacity-50 me-2"><i class="bi bi-envelope-fill" aria-hidden="true"></i></span>priya.alvarez@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-4.svg" alt="Knowledge that moves you forward" 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.

Web development

$15.87

Sold out

Photography

$32.90

<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="UX fundamentals" class="w-100 rounded-2">
      <div class="small fw-medium mt-2 text-truncate">
        Web development
      </div>
      <div class="small">
        $15.87
      </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="Photography" 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">
        Photography
      </div>
      <div class="small opacity-50">
        $32.90
      </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.

Learn new skills at your own pace
Learn new skills at your own pace
Study smarter with guided paths
Learn new skills at your own pace

<ol class="list-unstyled mb-0 d-grid gap-1">
  <li class="opacity-100">Learn new skills at your own pace</li>
  <li class="opacity-75">Learn new skills at your own pace</li>
  <li class="opacity-50">Study smarter with guided paths</li>
  <li class="opacity-25">Learn new skills at your own pace</li>
</ol>

16Background pattern dots

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

Knowledge that moves you forward

Our study groups gives you focused on what matters wherever you are.

<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">Knowledge that moves you forward</h3>
  <p class="small mb-0 position-relative">Our study groups gives you focused on what matters wherever you are.</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.

This reliable release gives you focused on what matters wherever you are. A simple project guides customers coming back with friendly support.

* The new lifetime access turns the whole team on the same page at a fair price.

<div>
  <p class="mb-1">This reliable release gives you focused on what matters wherever you are. A simple project guides customers coming back with friendly support.</p>
  <p class="small opacity-75 mb-0">* The new lifetime access turns the whole team on the same page at a fair price.</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-1.svg" alt="7 lessons from our workflow" 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.

Noah Brennan
Luna Morgan (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>Noah Brennan</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>Luna Morgan <small>(inactive)</small></span></li>
</ul>