This video displays a solid 85% gray screen, hex value #D9D9D9, for three hours at 4K resolution.
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The footage consists of a single, unchanging full-screen field of this specific neutral tone, maintained for the entire duration without any transitions, overlays, or movement. It is designed as a static reference for anyone performing display calibration, testing monitor uniformity, or verifying hardware consistency. Photographers and video editors often use a mid-gray reference to establish accurate white balance and check exposure metering, ensuring that shadows and highlights are balanced correctly relative to the neutral point. If you are troubleshooting a screen, this sustained static image helps reveal issues that might be missed during normal playback, such as dead pixels, backlight bleed, or uneven panel illumination. It is also useful for identifying burn-in or image retention, as the constant pixel load can make faint ghosting more apparent over time. For the most accurate results, play the video in fullscreen mode at 100% zoom to ensure the image fills the entire display area without scaling artifacts. Before starting, disable any ambient light sensors or adaptive brightness features on your device, as these can automatically adjust the output based on room lighting and compromise the reference value. The neutral gray serves as a reliable benchmark for detecting subtle color casts that might not be visible in standard test patterns. Since the image does not change, you can set it running and step away while the monitor warms up to its stable operating temperature. The consistent luminance level provides a stable target for measuring gamma and white point accuracy. Whether you are setting up a new workstation, diagnosing a faulty panel, or simply checking that your display is rendering mid-tones correctly, this static frame offers a straightforward way to evaluate performance. The lack of motion ensures that no compression artifacts or motion blur interfere with your assessment, allowing you to focus entirely on the color and brightness of the displayed surface. This is a pure utility video intended for technical verification and visual inspection.

COLOR VALUES
HEX:     #D9D9D9
RGB:     217, 217, 217
CMY:     15%, 15%, 15%
CMYK:    0%, 0%, 0%, 15%
HSL:     0deg, 0%, 85%
HSV:     0deg, 0%, 85%
Decimal: 14277081
Name:    85% Gray

FORMAT: 3840x2160 (4K UHD), 3 hours, BT.709, limited range.
The color is encoded exactly, with no gradient, logo or watermark, so nothing on screen interferes with a measurement. The audio track is silent.

HOW TO USE
Play fullscreen at 100% zoom. Turn off adaptive brightness, night mode and any color filter first. For measurements, let the display warm up for a few minutes before reading it.

More colors in this series: Solid Color Screens for Display Calibratio...

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#calibration #displaytest #colorscreen