Full Screen Blue Display
Turn your entire screen blue with one click. A blue screen is widely used in video production as an alternative to green screen, for testing display color accuracy, and for creating cool-toned ambient lighting.
F for fullscreen, Esc to exit
What a blue field is for
Blue Screen Chroma Key
Blue screen is preferred over green screen when filming subjects with green elements (plants, green clothing). The film industry traditionally uses blue for high-end visual effects.
Display Color Testing
Test the blue channel of your monitor for uniformity and accuracy. Blue is often the weakest channel on cheaper displays, making it a good calibration reference.
Cool Ambient Lighting
Create a calm, cool-toned atmosphere perfect for focused work, meditation, or sleep preparation. Blue light from a screen provides even, gentle illumination.
Blue Subpixel Testing
Identify stuck or dead blue subpixels that would be invisible on a white screen. Each pixel has separate red, green, and blue elements that can fail independently.
Questions
Other colors
Any other colour: use the picker on the homepage.
Screen tools
- White Screen Test Check a white field for dust, dead pixels, uniformity, and tint.
- Dead Pixel Test Cycle white, black, red, green, and blue to find faulty pixels.
- Stuck Pixel Fixer Rapidly flash colors over a stuck pixel to try to un-stick it.
- Backlight Bleed Test Spot light leaking around the edges of an LCD panel on black.
- Screen Burn-In Test Reveal retained images and uneven wear on OLED and plasma panels.
- Monitor Test Full sweep: pixels, bleed, uniformity, and color channels.
- Light Box Use the screen as a tracing panel or soft photography light.