What does a pure blue screen test?
It isolates blue sub-pixels and makes dark or incorrectly colored areas easier to find. Use red and green fields too for a complete RGB check.
Solid color screen
Blue Screen
Open a pure blue screen online for blue-channel checks, display calibration and video backgrounds. Download a blue AVIF background in fullscreen, free.
Blue Screen for testing and lighting
Pure blue isolates the blue channel and exposes uneven pixels or tinting that can be hard to see on mixed content. Keep this same reference on every display when comparing color balance, projection or a camera feed.
- Inspect blue sub-pixels and locate stuck pixels on LCD or OLED panels.
- Use a saturated blue background for video, design and projection tests.
- Compare blue-channel uniformity across monitors and mobile screens.
Fullscreen tips
Open fullscreen before inspecting the display. Lower room light and clean the panel first so dust, tint and pixel defects are easier to see.
Follow the complete dead pixel test guideHow to use Blue Screen online
- 1
Open the blue screen fullscreen
Fill the display with pure blue and scan slowly from the center to the corners. Look for dark pixels, color shifts and uneven brightness.
- 2
Compare display color balance
Use the same blue field on two monitors, phones or projectors. Keep brightness and picture modes consistent for a useful comparison.
- 3
Download a blue AVIF background
Choose a resolution for a solid blue video backdrop, design canvas, projection reference or blue-channel calibration check.
Common questions about Blue Screen
Can I use the blue screen for video?
Yes. Download the AVIF background or use fullscreen as a consistent blue reference for design, projection and video compositing work.
More screen tools
Free browser-based utilities for testing, lighting and creating screen backgrounds.
Color Screen
Open any solid color full screen or download it as an image.
Screen Light
Turn your display into an adjustable warm or cool light source.
Gradient Generator
Build, preview and export smooth two-color backgrounds.
Screen Information
Inspect resolution, pixel density, viewport and display capabilities.