To adjust a MacBook keyboard backlight, open Apple menu > System Settings > Keyboard and drag the Keyboard brightness slider. Drag it all the way left to turn the backlight off. If your Mac has keyboard-brightness keys, you can use those instead. You can also add Keyboard Brightness to Control Center for faster access and enable automatic low-light adjustment or an inactivity timeout.
Last updated: September 21, 2026 — instructions checked against current Apple Support guidance.
Quick Answer
The most consistent way to adjust a MacBook keyboard backlight is Apple menu > System Settings > Keyboard > Keyboard brightness. If your Mac has dedicated keyboard-brightness keys, you can use them instead. For faster access, add Keyboard Brightness to Control Center and use its slider. You can also enable low-light adjustment or set the backlight to turn off after inactivity.
Key Takeaways
- System Settings > Keyboard > Keyboard brightness is the most reliable software path on a Mac with supported keyboard backlighting.
- Older MacBook keyboards may use F5 to dim the keyboard and F6 to brighten it, while newer layouts may not have dedicated keyboard-brightness keys.
- Keyboard Brightness can be added to Control Center if it is not already visible there.
- Automatic low-light adjustment uses the ambient-light sensor near the camera, so keep that area uncovered.
- If the backlight still stays dark at maximum brightness in a dark room after a restart and settings check, consider Apple Support or qualified repair help.
At a Glance
| Time Required | 1 to 3 minutes |
| Difficulty | Easy |
| Tools Needed | Your MacBook and access to System Settings, keyboard controls, or Control Center |
| Cost | Free |
Where Are the MacBook Keyboard Backlight Controls?
The most consistent place to find MacBook keyboard backlight controls is System Settings. Open the Apple menu, choose System Settings, then select Keyboard. If your MacBook supports keyboard backlighting, look for the Keyboard brightness slider. Drag it right to brighten the keys or left to dim them.
You can also check the function keys at the top of the keyboard. If your keyboard shows dedicated keyboard-brightness symbols, use those keys for quick adjustments. On older MacBook keyboards with the traditional layout, F5 decreases keyboard brightness and F6 increases it. If your top row is configured to behave as standard F1–F12 function keys, you may need to hold the Fn/Globe key while pressing the keyboard-brightness key.
If your MacBook has keyboard-brightness symbols, keep pressing the dim key to lower the backlight all the way to off, or use the brighten key to increase it.
For faster mouse or trackpad access, you can use Control Center. On current macOS versions, click the Control Center icon in the menu bar. If Keyboard Brightness is already present, select it and move the slider. If it is missing, choose Edit Controls, add Keyboard Brightness, then click Done. Older macOS versions may place Control Center customization in System Settings or System Preferences instead.
Once added, the Keyboard Brightness control can save time if you change the backlight often. System Settings remains the better place to manage automatic low-light adjustment and the inactivity timeout.
Note: MacBook keyboard layouts and macOS interfaces vary by generation. A missing Control Center button does not by itself mean the backlight is unsupported or broken; check System Settings > Keyboard first.
How Do I Adjust the MacBook Keyboard Backlight Brightness?
Start with System Settings > Keyboard and move the Keyboard brightness slider. Drag it right for more light, left for less light, or completely left to turn the keyboard backlight off.
If your MacBook has dedicated keyboard-brightness keys, those are faster. Press the brighter keyboard symbol to increase the light and the dimmer symbol to reduce it. On older MacBook keyboards with the traditional F5/F6 layout, F5 dims the keyboard and F6 brightens it.
If Keyboard Brightness has been added to Control Center, click Control Center in the menu bar, select Keyboard Brightness, and drag the slider. This is useful on newer keyboard layouts that do not have dedicated backlight keys.
If your Mac has keyboard-brightness keys and you want finer control, hold Option-Shift while pressing a keyboard-brightness key. macOS can then adjust the keyboard brightness in smaller increments.
Choose the lowest level that keeps the key legends easy to see. Full brightness is usually unnecessary when the display or room lighting already makes the keyboard visible.
Pro Tip: If you adjust keyboard brightness frequently, add Keyboard Brightness to Control Center instead of opening System Settings each time.
Why Does My MacBook Keyboard Backlight Change Automatically?
A MacBook with supported automatic backlighting can change the keyboard brightness according to surrounding light. To control this behavior, open Apple menu > System Settings > Keyboard.
Look for Adjust keyboard brightness in low light. Turn it on if you want macOS to manage the keyboard backlight automatically. Turn it off if you prefer to choose the brightness manually.
The automatic feature uses the Mac’s ambient light sensor. Apple places the sensor near the camera at the top of the computer, so make sure that area is not covered when you are using the MacBook in low light.
If the room is bright, automatic adjustment may keep the keyboard backlight low because the keys are already visible. Moving to a darker area is therefore a useful test before assuming the lighting system has failed.
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How Do I Make the Keyboard Backlight Turn Off Automatically?
MacBooks with supported keyboard backlighting can turn the light off after a period of inactivity. This is useful when you pause typing, watch a video, or leave the computer for a short time.
Open System Settings > Keyboard. Find Turn keyboard backlight off after inactivity, then choose the available timeout that fits how you use the MacBook.
This setting is different from setting keyboard brightness to zero. The inactivity option automatically switches the backlight off after the selected idle period instead of disabling it continuously. When you begin using the Mac again, the backlight can return if the brightness level is above zero and the current lighting conditions allow it.
Warning: Do not assume the backlight is broken simply because it shuts off while you are not typing. Check the inactivity setting first, especially if the light returns when you resume using the MacBook.
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What If My MacBook Keyboard Backlight Is Not Working?
If the keyboard backlight does not respond, first determine whether the problem is brightness, automatic adjustment, a missing shortcut, or a possible hardware issue.
- Check System Settings first: Open System Settings > Keyboard and move the Keyboard brightness slider above zero.
- Test in a darker room: Automatic low-light adjustment can make the keyboard appear very dim in a bright environment.
- Check the sensor area: The ambient-light sensor is near the camera. Make sure that area is not covered.
- Do not treat a missing Control Center button as a failure: Open Control Center > Edit Controls and add Keyboard Brightness if it is available.
- Check the function-key behavior: If your keyboard has brightness symbols but the top row is configured as standard function keys, try holding Fn/Globe while pressing the relevant key.
- Restart your MacBook: A restart can clear a temporary macOS or settings problem.
- Install pending macOS updates: Update the system before moving to deeper troubleshooting.
The symptom can help narrow the cause. If the slider works but the light stays low mainly in bright rooms, automatic adjustment is the likely explanation. If Keyboard Brightness is missing only from Control Center, add the control before assuming there is a hardware problem.
If the Keyboard brightness control exists but the keyboard remains dark at maximum brightness in a dark room after checking the sensor area and restarting the MacBook, a hardware inspection becomes more reasonable. Contact Apple Support or a qualified repair provider for further diagnosis.
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Frequently Asked Questions
Can I Change the MacBook Keyboard Backlight Color?
macOS provides brightness controls for the built-in MacBook keyboard backlight, but it does not provide a normal setting for choosing different keyboard backlight colors.
Does the MacBook Keyboard Backlight Use Battery Power?
Yes. The keyboard backlight uses power, but there is no single fixed battery-life penalty because usage varies with brightness level and how long the light stays on. Lower the brightness or use the inactivity timeout if you want to minimize unnecessary power use.
How Do I Know if the Backlight May Be Malfunctioning?
A hardware problem becomes more plausible if the Keyboard brightness control is available, brightness is set above zero, the MacBook is tested in a dark room, the sensor area near the camera is uncovered, and the keyboard still remains dark after a restart. Flickering or partial lighting can also justify professional inspection.
Are There Keyboard Shortcuts for Adjusting the Backlight?
Yes, if your keyboard has dedicated keyboard-brightness keys. On older MacBook keyboards with the traditional layout, F5 decreases brightness and F6 increases it. If the top row is set to standard function keys, you may need to hold Fn/Globe. On supported keyboards, Option-Shift plus a keyboard-brightness key adjusts the light in smaller steps.
How Can I Tell Whether My MacBook Supports Keyboard Backlighting?
Open System Settings > Keyboard and look for the Keyboard brightness control. If the option is absent, confirm the specifications for your exact MacBook model through Apple Support before assuming the keyboard backlight has failed.
Why Is Keyboard Brightness Missing From Control Center?
Keyboard Brightness may simply not have been added to Control Center. On current macOS versions, open Control Center, choose Edit Controls, and add Keyboard Brightness if it is available. If the Keyboard brightness control is also missing from System Settings > Keyboard, confirm your model and macOS support before troubleshooting hardware.
Can I Turn the MacBook Keyboard Backlight Off Completely?
Yes. Open System Settings > Keyboard and drag the Keyboard brightness slider all the way to the left. If your Mac has keyboard-brightness keys, you can also keep pressing the dim key until the backlight turns off.
Conclusion
For most users, System Settings > Keyboard > Keyboard brightness is the most dependable place to control a MacBook keyboard backlight. If you adjust it often, add Keyboard Brightness to Control Center for faster access.
If the backlight behaves differently in bright and dark rooms, check the automatic low-light setting and make sure the sensor area near the camera is uncovered. If the keyboard remains dark at maximum brightness in a dark room after a settings check and restart, contact Apple Support or a qualified repair provider.
