Black Level Test
Count visible patches 1-32 on black background. All visible = healthy. Missing low = crushed blacks.
Look for the gray patches on the black background. You should see all patches labeled 1 through 32. If patches at low numbers (1-5) are invisible, your monitor is crushing blacks - increase brightness or change the OSD black level setting.
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Black Level Test guide
How to use the Black Level Test accurately
A black level test (or crushed blacks test) checks whether your monitor can distinguish very dark colors from pure black. We display 32 patches at RGB values 1 through 32 on a pure black background. A correctly calibrated monitor shows all 32 distinct steps.
Black Level Test FAQ
Common black level test questions
Checklist
Display checks to confirm
- What Is a Black Level Test? A black level test (or crushed blacks test) checks whether your monitor can distinguish very dark colors from pure black. We display 32 patches at RGB values 1 through 32 on a...
- How to Read Your Result All 32 visible: Excellent black level. Your monitor preserves shadow detail.
- How to Fix Crushed Blacks Check GPU RGB range: Nvidia Control Panel > Display > Output dynamic range = Full. AMD: Display > Pixel Format = RGB 4:4:4 Full.
