Blue Screen - Online Blue Background Tool
Turn your monitor or phone into a pure blue screen. Ideal for checking blue subpixels, alternative chroma keying, or cool mood lighting.
More Display Tools
Why Use a Blue Screen?
A full blue screen is a practical utility for display diagnostics and content creation. It targets the blue subpixels of your monitor and provides an alternative color for background removal.
1. Testing Blue Subpixels
LCD and OLED screens create colors by mixing Red, Green, and Blue. By filling your screen with pure blue (#0000FF), you can isolate and inspect the blue subpixels. If you see a tiny black dot, it means a blue subpixel is dead.
2. Alternative Chroma Key
While green screens are the standard, blue screens ("Blue Screen") are often used in movies when the actor is wearing green clothing (to avoid them disappearing). You can use this tool as a digital blue background for your video projects.
3. Mood Lighting
Blue light is energetic and cool. Turning your screen blue can change the atmosphere of a room for photography or set design, creating a "cyberpunk" or "night" aesthetic.
Technical Specifications
| Property | Details |
|---|---|
| HEX Code | #0000FF |
| RGB Color Model | (0, 0, 255) |
| Wavelength | ~450–495 nm |