Green screen

This page turns your display pure green (#00FF00). Use it as a small chroma-key background behind objects, to test green subpixels, or as colored light.

Color:

Tip: press F for fullscreen, Esc to exit. Keeps your screen awake while open.

Press Esc or tap to exit

Runs locally in your browser. Optional recordings and photos stay on your device; nothing is uploaded.

What this test can tell you

The page draws a solid color for you to inspect visually. Compare more than one background and distinguish a mark fixed to the display from something that moves with page content.

It does not automatically detect defects, measure color accuracy or repair a panel. Browser fullscreen, color settings, brightness and room reflections affect what you see.

How to use it

  1. Press “Open fullscreen” or F.
  2. Set brightness to maximum for an even key color.
  3. Press Esc or tap to exit.

Chroma key tips

Keep your subject away from the screen to avoid green spill, and light the subject separately. For editing software, standard chroma green is often #00B140; pick it with the color screen tool.

Not working? Try these fixes

The green is not even

Viewing angle and backlight change the brightness. Face the screen straight on and avoid reflections.

Frequently asked questions

Can a monitor replace a green screen?

For small objects and product shots, yes. For people, a fabric green screen is larger and more even.

What is the color code?

#00FF00, RGB(0, 255, 0).

Methods and reference documentation

Related tests

Blue screenOpen a blue background or compare the blue color channel. Red screenShow pure red fullscreen for a color or subpixel comparison. Color screenChoose a solid color or enter a custom HEX value.