Output
Steady colors, steps or fine-line patterns
UserBenchmark / All Tools / Color Range Test
Display
Color Range Test
Compare full-range RGB endpoint steps to inspect black and white clipping.
Free to useNo downloadNo sign-up
Color Range Test · At a glance
Quick answer: Compare full-range RGB endpoint steps to inspect black and white clipping. A full/limited mismatch can crush shadows or wash out black.
Color Range Test
The test loads when you open it. Device access is requested only after you choose to start.
Detailed guide
How to use this tool
- Compare near-black and near-white endpoint steps.
- Check that source output range and monitor input range agree.
Input
Manual visual inspection
Browser requirement
Native resolution; fullscreen support
Processing
Runs on your device; no tool-result upload
How it works and what the result means
These are visual inspection patterns. The page cannot read individual panel pixels, measure nits or contrast ratio, diagnose a panel automatically, or repair dead pixels.
Reading the result
A full/limited mismatch can crush shadows or wash out black. The page shows endpoints but cannot read the actual cable signal format.
Worked example and assumptions
Near-black and near-white endpoint steps
A limited/full RGB mismatch can crush black or clip white. These visual endpoints help investigate the setting but cannot read the actual cable signal range.
A limited/full RGB mismatch can crush black or clip white. These visual endpoints help investigate the setting but cannot read the actual cable signal range.
What to check next
Change only one range setting at a time and inspect both ends of the grayscale after every change.
Use native screen resolution and 100% browser zoom for fine patterns. Disable adaptive brightness for comparisons. PWM inspection needs an external camera; banding can also be a camera artifact.
Frequently asked questions
Can the page detect whether HDMI uses full RGB?
No. Browser rendering does not expose the complete display-link signal configuration. The pattern supports visual investigation of the settings.
How do I start the Color Range Test?
Choose a pattern and open fullscreen. Inspect the entire panel, then click to cycle patterns. Press Escape to leave fullscreen.
Does this tool require a download or an account?
No. Open the interactive tool above in a modern browser. The instructions and explanations are available even with JavaScript disabled; running a test needs JavaScript.
Why can two attempts give different results?
Power settings, background tasks, browser scheduling, operating-system input processing and device settings affect measurements. Compare repeated attempts with identical settings rather than the single highest score.