青い画面

A blue full-screen works as a backdrop or chroma-key surface for product and portrait photography when green doesn't fit the subject.

Before digital keying, film used blue screens — and blue still works where green would clash with the subject's colors.

A solid blue screen helps lighting teams judge how reflected color falls on a subject, and verifies an even keyable tone edge-to-edge.

A muted blue full-screen behind you reads as calm and professional on camera, a solid alternative to busy virtual backgrounds.

Display pure blue to verify color accuracy, check for stuck blue subpixels, and compare against green and red during tests.

Use the dead pixel test tool

Select the 青い画面 tile on this page, then press Go Full Screen. Your browser fills the entire screen edge-to-edge with #1656ff. Tap anywhere or press Escape to exit.

Yes. Open the 青い画面 on a second device or window, position it behind you, or use it as a light source to evenly light your face on a call.

Yes. Pick the 青い画面 color, choose a size preset or type a custom width and height, then press Download PNG. You'll get a lossless, high-quality image at exactly that size, rendered in your browser — nothing is uploaded.

Yes, this tool is 100% free and works entirely in your browser. No account, no sign-up, and no images are uploaded or stored.