HexScreen / Blue Screen
#0000FF · Free · No adsBlue screen for keying and tests.
Pure blue for blue screen keying, checking blue subpixels and as a vivid color surface.
Tip: F starts fullscreen, Esc exits.
How it works
Pick a color
Choose a preset or set any shade with the color picker.
Start fullscreen
Click the preview or press F. The color fills your entire screen.
Use it and exit
Switch colors with ← →, return with Esc or a double-click.
What you can use it for
Blue screen
An alternative to green screen for green subjects.
Blue subpixels
Spot faulty blue pixels.
Color mood
Cool light for photos and videos.
Display test
Check the uniformity of a saturated color.
Download Blue Screen as an image
Created right in your browser, in full resolution and without a watermark.
Good to know
Blue screen instead of green screen
If the subject itself contains green, blue is the better keying background. Blue also creates less color fringing around hair.
Frequently asked questions
How do I start fullscreen mode?
Click the preview, the “Start fullscreen” button, or press the F key. Press Esc or double-click to exit.
Does it work on phones and tablets?
Yes. Android and most desktop browsers use true fullscreen. On iPhone the color fills the browser window; add the page to your home screen for true fullscreen.
Can I change the color in fullscreen?
Yes. Move the mouse or tap the screen to show the color bar, or use the arrow keys.
Is it free?
Yes, all tools and image downloads are free, with no sign-up and no ads.
Is a bright screen bad for my eyes?
Not with normal use. Lower the brightness for longer sessions and take regular breaks.