Fullscreen Color Picker - Custom Full Screen Color
Choose any custom color and open it fullscreen for display checks, lighting tests, video backgrounds or color comparison.
Quick answer
The fullscreen color picker lets you choose a custom HEX color and display it as a full-browser test surface or simple backdrop.
Method: ScreenTestKit generates the test surface in your browser. Results depend on visual inspection; the site does not read or diagnose physical panel hardware.
How to use this test
- Choose a preset color or type a HEX value.
- Open the chosen color fullscreen.
- Use it for display checks, lighting comparisons or background setup.
- Return to the picker to test another color.
What to watch for
- Banding, tint or marks that appear only on a specific color.
- Room reflections that change perceived color.
- Browser color management differences.
- Visible dust or smudges on bright custom colors.
How to interpret results
Issue on one custom color
Compare nearby colors and primary screens before blaming the panel.
Backdrop use
For camera work, lighting and exposure control matter more than the browser color alone.
Color mismatch
A browser picker is not a calibrated reference.
Frequently asked questions
Can I enter a HEX color?
Yes. Use the input to display a custom color fullscreen.
Can this calibrate my monitor?
No. It displays a browser color but does not measure the panel.