Full Screen Dark Gray
Experience absolute precision with our professional-grade dark gray utility. Perfect for hardware validation, color matching, and creating immersive digital environments.
OLED Refresh Timer
How to use Dark Gray
Click the "Enter Fullscreen" button above or press F11.
Your screen will be filled with the selected color.
Check for any discoloration, backlight bleed, or dead pixels.
Press the Escape key to exit fullscreen when finished.
Did you know?
OLED screens benefit from regular color cycling. Using the timer to run a 5-minute cycle can significantly reduce the risk of temporary image retention.
Why this tool is useful
Dark Gray tests your monitor gamma curve in the critical shadow zone between 20 and 40 percent luminance. Most display calibration issues manifest first in this tonal range as banding, posterization, or mid-shadow crushing. If dark gray appears as a uniform flat tone without any visible gradient from corner to center, your panel local dimming or gamma curve is performing well.