What the iOS Liquid Glass slider does
The iOS Liquid Glass slider is a system‑wide transparency control that lets you fine‑tune how translucent toolbars, menus, icons, and other interface elements appear, so you can either highlight the glass‑like look or tone it down for better contrast and readability across the entire system. Apple’s Liquid Design (often called Liquid Glass) first appeared in an earlier iOS release with fixed transparency levels, which made some text and controls hard to read and caused complaints from users sensitive to motion and visual effects. In the latest update, Liquid Glass is now less transparent by default, and the new transparency slider gives you more precise control over how intense those Liquid Glass effects appear. According to Apple’s WWDC presentation, moving the slider to the most opaque end can "essentially disable Liquid Glass, making the toolbar opaque."
How to use the new transparency slider customization
Once you have the iOS 27 developer beta installed, you can start fine‑tuning iOS 27 Liquid Glass in a few taps. Open Settings, go to Appearance, then tap Liquid Glass. Here you will see the new transparency slider customization, which replaces the older Clear and Tinted toggle. Drag the slider toward Ultra Clear if you prefer an ultra‑transparent aesthetic, where toolbars and menus take on a glass‑like, see‑through look. Slide toward Tinted Glass if you want stronger backgrounds and higher contrast. As Mashable notes, the interface includes a live preview that lets you "immediately see the result in a nifty viewer" showing how a sample text field and other elements respond to your adjustments. Move the slider until text, buttons, and backgrounds feel comfortable, then exit Settings; your choice applies system‑wide.
Tone down Liquid Glass effects with Reduce Transparency and Dark Mode
If you are not ready for the full slider or you want a more subdued interface, you can cut Liquid Glass effects with accessibility tools that exist today. On iPhone or iPad, go to Settings > Accessibility > Display & Text Size and enable Reduce Transparency. This makes folders, menus, and other panes more opaque, directly reducing how much background bleeds through the Liquid Glass design. Pair this with Dark Mode for extra comfort: head to Settings > Display & Brightness and set Appearance to Dark. Liquid Glass often looks calmer against darker surfaces, which can reduce eye strain and help if you found the design distracting in light mode. These options work alongside the iOS 27 Liquid Glass slider, so you can combine them: use Dark Mode and Reduce Transparency, then nudge the slider only as transparent as you can comfortably handle.
Use the Reduce Brightness setting and motion controls to cut glare
To further tame Liquid Glass effects, use the reduce brightness setting and motion controls that Apple added in recent updates. On your iPhone or iPad, go to Settings > Accessibility > Display & Text Size and enable Reduce Brightness. This slightly dims intense lighting and highlight effects built into the Liquid Glass aesthetic, which can make bright panels and reflections less intrusive without removing transparency entirely. PCMag notes that this change is subtle but can "make the theme more tolerable," especially when combined with reduced transparency. Next, open Settings > Accessibility > Motion and enable Reduce Motion. This now also affects some Liquid Glass effects, calming transitions and parallax that can feel overwhelming for sensitive users. With Reduce Brightness, Reduce Transparency, and Reduce Motion enabled together, the interface becomes quieter and easier to read, while still preserving the modern look of iOS 27 Liquid Glass.
Combine Home Screen and tint options for a cleaner, custom look
Beyond the core slider, you can further control Liquid Glass effects by adjusting tints and your Home Screen. In Settings > Display & Brightness > Liquid Glass, earlier iOS versions let you pick Clear (more transparent) or Tinted (more opaque); iOS 27 folds this into the slider but the idea remains the same: push toward Tinted if you want less visual noise and better contrast. Then, long‑press an empty area of the Home Screen, tap Edit, and choose Customize. Use the sun icon to toggle between light and dark icon treatments, or use the Dark option at the bottom to give icons a deeper background that fights the washed‑out look. The Tinted customization adds sliders for color and lightness, so you can pick a calmer, darker tint that works with the Liquid Glass slider setting, reducing clutter while keeping a consistent, colorful style.
