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.

Car rental

Available

Holiday packages

Coming soon

<div class="row g-2">
  <div class="col-sm-6">
    <div class="border rounded-3 p-3">
      <div class="fw-semibold">
        Car rental
      </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">
        Holiday packages
      </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.

Car rental
Hotel booking
Car rental

<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> Car rental</li>
  <li class="opacity-50 text-decoration-line-through"><i class="bi bi-check-square-fill" aria-hidden="true"></i> Hotel booking</li>
  <li><i class="bi bi-square-fill" aria-hidden="true"></i> Car rental</li>
</ul>

7Watermark text

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

Explore more, worry less

The new 24/7 assistance makes decisions quicker and clearer from the very first day.

<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">
    2016
  </div>
  <h3 class="position-relative h5 fw-semibold mb-1">Explore more, worry less</h3>
  <p class="position-relative small mb-0">The new 24/7 assistance makes decisions quicker and clearer from the very first day.</p>
</div>

8Muted icons

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

472 Market Square, Edinburgh
+1 (555) 253-9323
ruby.harlow@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>472 Market Square, Edinburgh</li>
  <li><span class="opacity-50 me-2"><i class="bi bi-telephone-fill" aria-hidden="true"></i></span>+1 (555) 253-9323</li>
  <li><span class="opacity-50 me-2"><i class="bi bi-envelope-fill" aria-hidden="true"></i></span>ruby.harlow@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-2.svg" alt="Explore more, worry less" 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.

Mountain lodge

$22.26

Sold out

Safari adventure

$53.23

<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="City break" class="w-100 rounded-2">
      <div class="small fw-medium mt-2 text-truncate">
        Mountain lodge
      </div>
      <div class="small">
        $22.26
      </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="Weekend getaway" 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">
        Safari adventure
      </div>
      <div class="small opacity-50">
        $53.23
      </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.

Trips designed around you
Trips designed around you
The world is waiting for you
The world is waiting for you

<ol class="list-unstyled mb-0 d-grid gap-1">
  <li class="opacity-100">Trips designed around you</li>
  <li class="opacity-75">Trips designed around you</li>
  <li class="opacity-50">The world is waiting for you</li>
  <li class="opacity-25">The world is waiting for you</li>
</ol>

16Background pattern dots

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

Trips designed around you

A calm workflow gives projects moving forward without the usual hassle.

<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">Trips designed around you</h3>
  <p class="small mb-0 position-relative">A calm workflow gives projects moving forward without the usual hassle.</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.

The new 24/7 assistance guides projects moving forward for teams of every size. The new local guides helps projects moving forward for teams of every size.

* A fast process gives decisions quicker and clearer wherever you are.

<div>
  <p class="mb-1">The new 24/7 assistance guides projects moving forward for teams of every size. The new local guides helps projects moving forward for teams of every size.</p>
  <p class="small opacity-75 mb-0">* A fast process gives decisions quicker and clearer wherever you are.</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-12.svg" alt="The fast experience checklist" 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.

Nora Okafor
Hana Kim (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>Nora Okafor</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>Hana Kim <small>(inactive)</small></span></li>
</ul>