Color screens

Blue Screen

Open a plain blue screen online in fullscreen, compare a blue field, or choose a custom color. This is a color tool, not a Windows error screen.

Before you open: Use a comfortable device brightness. Keep static patterns brief, especially on OLED or plasma displays. This page does not prevent or repair burn-in. Stop if the light feels uncomfortable.

Blue screen#0000FF · RGB 0, 0, 255

Choose a color or enter a HEX value. Changes stay in this browser.

Blue screen#0000FF

Hide controls for a clean field. Move, tap, or press a key to show them. ← → change color.

How to use the blue screen

  1. Set your device to a comfortable brightness and choose Open fullscreen. Move the window to the monitor you want to view first.
  2. Use Hide controls for an uninterrupted field. Move the pointer, tap, or press a key to reveal the controls again. Use the named color buttons or arrow keys to switch colors.
  3. Select Close screen or press Escape to leave. If your browser refuses fullscreen, the field stays usable inside the window; browser bars may remain visible.

Choose your own shade with Custom color, or enter a three- or six-digit HEX value and select Apply color. The preview and fullscreen field update together. Switch back to a named preset using the fullscreen color buttons.

An intentional blue screen

This page fills a display with blue when you choose to open it. It does not simulate a Windows blue screen of death, show an error code, or diagnose a system crash. Use the blue field as a display background; no operating-system setting is changed by this page.

Compare blue with the other RGB fields

A blue field is one useful step when examining a tiny fixed point or an obvious channel difference. Repeat on red, green, white, and black, keeping device brightness and picture mode unchanged. A broad difference between two monitors may come from profiles or viewing conditions rather than a failed channel. Use the RGB test for more structured comparisons.

Avoid reading brightness into the RGB number

RGB 0, 0, 255 describes the requested digital color, not its physical luminance. Blue may look darker than green or white at the same device brightness. This page does not measure luminance, blue-light exposure, or calibrated color accuracy. Stop if the saturated field is uncomfortable and return to normal varied content.

What this color field cannot measure

The page requests #0000FF (RGB 0, 0, 255). Browser color handling, device settings, ambient light, and the panel affect what you see. A uniform field is a visual aid; it cannot measure color accuracy, luminance, contrast ratio, gamut coverage, or physical response time. Screenshots cannot document a physical pixel defect; a photo can record a location, but its exposure is not a measurement.

On phones and tablets, fullscreen availability varies by browser and device. The window fallback remains usable, but cannot remove system bars or cover an area reserved by the operating system. Use the larger preview for a plain background, and a focused test for a specific display question.

Frequently asked questions

Is this the Windows blue screen of death?

No. It is a solid #0000FF background that you open intentionally. It does not diagnose or imitate a Windows crash.

Why does this blue screen look darker than white?

Different RGB colors can produce different perceived brightness and physical output. The color value is not a luminance measurement or a device-brightness setting.

Can I choose a custom color instead of blue?

Yes. Use Custom color to choose a shade, or enter a three- or six-digit HEX value and select Apply color. The preview and fullscreen field use the selected color. The named preset remains available in the fullscreen controls.