Pure color screen
Gray Screen
Open a gray screen (#808080) to inspect uniformity, banding, and dirty screen effect. Use it fullscreen or download free 1080p and 4K PNGs.
This is an equal-channel sRGB midpoint for flat-field inspection and neutral backdrops. It is not a physical paint swatch. It is not a calibrated 18% photographic gray card.
How to use this gray screen
Fill the display with solid gray to inspect broad uniformity, banding, dirty screen effect, and tint variation without the intensity of white. The same field also works as a quiet neutral backdrop, and the PNG downloads provide its exact numeric value as a file.
Uniformity and dirty screen effect
Mid-gray can reveal broad cloudy patches, edge shading, vertical bands, and tint changes that hide in detailed images. Inspect from a normal viewing distance, then move closer only to investigate a specific area.
Banding and tonal behavior
A flat field can expose abrupt bands or contours. One gray level does not replace a full gradient test. Use the LCD Screen Tester for guided grayscale and color patterns.
Neutral UI and image backdrop
Equal encoded red, green, and blue values provide a visually quiet background for interface mockups, screenshots, and small product images. It is neutral by numeric definition, not a guarantee of calibrated neutral appearance.
Technical note
All three sRGB channels are numerically equal at 128, the midpoint of the 0-255 encoded range. Because sRGB encoding is nonlinear, #808080 is not 50% display luminance, and it is not a calibrated 18% photographic gray card. Panel settings and ambient light still affect its appearance.
For deeper pixel diagnosis, use the LCD Screen Tester. To inspect actual dimensions, use the Screen Resolution Checker.
Frequently asked questions
Is #808080 the same as an 18% gray card?
No. An 18% gray card is a physical reflectance reference for photography, while #808080 is the numeric midpoint of encoded sRGB values.
Is #808080 equal to 50% screen brightness?
No. sRGB values are nonlinear, so a numeric channel value of 128 does not produce half the luminance of 255.
What should I look for on a gray screen?
Look for broad streaks, cloudy patches, edge darkening, unexpected bands, or areas with a green, magenta, warm, or cool tint.