How to Use Dark Mode on Dual Monitors With Different Brightness

Dark mode looks very different on two mismatched monitors. A dark gray page can look nearly black on one and washed out on the other, and moving your eyes between them is tiring. The fix starts with the monitors, not the dark mode settings.

1. Match the monitors first

• Put the same page, such as a dark web page, on both screens.
• Use each monitor's own buttons or menu to adjust brightness and contrast until the dark gray looks similar.
• Set both to the same color temperature or preset, such as "Standard" or "sRGB", rather than "Vivid" on one.
• On Windows, free tools such as Monitorian or Twinkle Tray adjust external monitor brightness from the taskbar. On a Mac, MonitorControl does the same.

2. Use one theme everywhere

• Set your system to dark mode, and Chrome to follow it: Settings → Appearance → Mode → Device.
• Use the same dark theme in your main apps, so no bright window sits next to a dark one.
• For web pages without their own dark theme, Modern Dark Mode darkens them. Its brightness and contrast settings apply to every Chrome window, so it can't be brighter on one monitor than the other; match the monitors themselves instead.

3. Handle HDR and laptop screens

• HDR monitors on Windows can make normal content look dim or gray. In Settings → Display → HDR, adjust the brightness slider for standard content, or turn HDR off for everyday work.
• Laptop plus monitor: laptop screens often have auto-brightness. Turn it off while docked so the laptop doesn't keep changing next to a fixed monitor.
• OLED and LCD side by side: OLED shows true black and LCD doesn't, so they'll never match perfectly. Use dark gray rather than pure black themes to reduce the difference.

4. Warm both screens evenly at night

Night Light on Windows and Night Shift on Mac warm all connected screens. Blue Light Filter only warms web pages in Chrome, so use it alongside the system setting rather than instead of it.

5. Arrange for comfort

• Put the screen you use most directly in front of you.
• Keep both at the same height and distance.
• Avoid a bright window behind either screen.

See how split screens affect eye fatigue, multi-monitor ergonomics and ideal brightness for a dark room.