Gray Screen
#808080 · RGB(128,128,128)
Click or press F for fullscreen
30-50% as a lamp · 80-100% for testing
Use Cases
Uniformity / DSE
50% gray is the most uniformity-sensitive color — patches and dirty-screen effect show clearly.
Burn-in outlines
OLED retention and burn-in outlines are easiest to read on gray — the standard inspection step.
FRC dither check
6-bit+FRC panels show subtle shimmering noise on gray.
Neutral reference
50% gray should be perfectly neutral; any tint means white balance or gain issues.
Three Steps
01
Set brightness
Use 50-80% system brightness for uniformity checks.
02
Go fullscreen
Click the swatch or press F to fill the screen with gray.
03
Hunt patches & outlines
Look for cloudy patches (Mura) and fixed outlines (burn-in).
FAQ
Tips
- Eyes are most sensitive to differences at mid-gray (Weber law)
- Re-check outlines after a few minutes
- Tinted gray = white balance problem
- 25/50/75% grays each reveal different issues