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Black Light applies visual effects to the screen by changing its gamma curve. You can invert colors, darken the screen beyond what's usually allowed, apply a color filter, or apply the 16-235 luminance gamut expected by some HDTVs.

What's New

Version 2.1:
  • Can now toggle the effect individually for each screen.
  • If you have more than one screen, can now toggle each screen from the menu behind the the dock menu or from the menu bar.
  • Fixed an issue occurring after a restart or a login that would make Black Light inoperative until it was quit and reopened.


  • OS X 10.6.6 or later

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Current Version (2.x)


Downloads 2,110
Version Downloads 112
Type Utilities / System
License Shareware
Date 14 Oct 2014
Platform Intel 64 / OS X / Intel 32
Price $6.99
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