Reduce the blur and transparency in macOS

macOS leans hard on frosted glass — panels that blur whatever is behind them to suggest depth and layering. If you prefer a flatter, cleaner interface where surfaces are just surfaces, one setting strips all of that out: Reduce Transparency turns the blur off and replaces it with solid fills. Here is how to flatten the look, and exactly where the blur lives so you know what changes.

Flatten the interface with one switch

1. Open System Settings.
2. Go to Accessibility → Display.
3. Switch on Reduce transparency.

The frosted-glass effect disappears everywhere at once. Panels that used to show a soft, blurred version of your desktop now sit on plain color, and the sense of stacked translucent sheets flattens into clean, single-layer surfaces. This is a real system setting rather than a theme, so it stays consistent across apps and survives restarts. It works the same on macOS 13 Ventura, 14 Sonoma, and 15 Sequoia.

Or flatten it from Terminal

# Remove the frosted-glass blur
defaults write com.apple.universalaccess reduceTransparency -bool true

Log out and back in so every panel repaints without blur. If you want the depth back later, remove the override:

# Undo — bring the blur back
defaults delete com.apple.universalaccess reduceTransparency

Where the blur actually lives

Turning it off flattens the parts of macOS built on that frosted material:

• The menu bar and its dropdown menus — solid instead of a blurred slice of your wallpaper.
• The Dock — a clean tray with no glassy translucence.
• Notification Center, Control Center, and widgets — opaque sheets rather than frosted ones.
• Sidebars in Finder, Mail, Notes, and Music — flat panels rather than translucent columns.
• Spotlight and the login screen — solid backgrounds.

A couple of things stay put by design: your wallpaper is untouched, and a few third-party apps roll their own blur that this system switch does not reach. But everywhere macOS itself draws the frosted material, it goes flat. If you like this direction, the natural companion is turning off the motion that goes with the depth — see how to reduce motion on Mac to replace the zoom animations with plain fades for a fully calm, flat feel.

One more source of color

Even with blur off, macOS pulls a faint accent from your wallpaper into windows and the Dock. For a truly neutral, flat look, also turn off wallpaper tinting on Mac so surfaces hold a single, steady shade.