Why is the Dock showing a Light background in Dark Mode?
If the Dock displays a Light background even with Dark Mode enabled:
In iOS 18
Make sure either;
- Reduce Transparency is set to OFF
- Dark Mode is turned on
- Set Blur to OFF when applying the wallpaper
- Set Home Screen customization to Light or Automatic
- Long-press on the Home Screen → Edit → Customize
- Restart your iPhone
In iOS 26
Make sure either;
- Dark Mode is turned on
- Set Home Screen customization to Dark
- Long-press on the Home Screen → Edit → Customize
- Select the Dark style
- In the visible slider options, select "Always"