# Color Screen

> Fill your screen with any solid color to test a display, find dead pixels, clean dust off a monitor, or take a color reference shot. Click to go fullscreen.

URL: https://uttir.com/color-screen
Categories: image-tools, web-tools
Privacy: Everything runs locally. No color data, screenshots, or display info is sent anywhere.

## About

A solid-color fullscreen is one of the simplest and most useful screen tools. It turns your display into a clean, even surface of light, which makes individual dead or stuck pixels easy to spot, makes dust and smudges obvious, and gives you a known color reference for photography or calibration.

Pick from the preset colors (white, black, red, green, blue) or use the color picker for any custom shade. Click the screen to go fullscreen; press Esc to exit. The whole thing runs in your browser — no screenshots, display data, or anything else is sent anywhere.

## How to use

1. **Pick a color** — Click a preset (white, black, red, green, blue, yellow, cyan, magenta) or use the color picker for a custom RGB value.
2. **Click to go fullscreen** — Click anywhere on the color. The cursor disappears for an unobstructed view. Press F to toggle the cursor back on if you need it.
3. **Exit** — Press Esc to leave fullscreen. The page resets to the picker.

## Examples

### Dead-pixel test

A pure white screen is the easiest way to spot a dead pixel (which will appear as a black dot) or a stuck pixel (which will be the wrong color).

Output:

```
Click the white swatch, then click the screen to go fullscreen. Inspect the panel from arm's length.
```

### Dust check

A bright primary color (red, green, or blue) shows dust and smudges more clearly than white, which tends to wash out surface contamination.

Output:

```
Click the red swatch, then click the screen. Any dust or smudges will appear as faint darker spots.
```

### Custom reference color

Need a specific shade for a photo or measurement? Use the color picker to dial in any RGB value.

Output:

```
Pick a color via the color input. The screen will fill with exactly that color.
```

## FAQ

### How do I find dead pixels?

Display a pure color (white, then black, then red, green, blue). A dead pixel is a black dot on a bright color; a stuck pixel is the wrong color on any other. The cursor hides automatically in fullscreen so it does not obscure anything.

### Why does it ask to enter fullscreen?

Browsers require a user gesture (a click) before a page can go fullscreen. That's a security feature to prevent pages from forcing fullscreen without the user's consent.

### Is this safe for OLED screens?

Long sessions of solid bright colors can contribute to OLED burn-in, just like any other static image. The white and primary-color presets are the most risky. For extended use, prefer darker colors or take breaks.

## Related tools

- [Color Picker](https://uttir.com/color-picker) — Pick any color and copy it as HEX, RGB, or HSL.
- [Contrast Checker](https://uttir.com/contrast-checker) — Check text/background color pairs against WCAG AA and AAA contrast requirements.
- [Color Palette Generator](https://uttir.com/color-palette-generator) — Generate 5-color palettes from any base color using classic harmony schemes — analogous, complementary, triadic, and more.
- [Color Picker from Image](https://uttir.com/image-color-picker) — Upload an image and click any pixel to get its HEX, RGB, and HSL color. Works entirely in your browser — your image never leaves your device.

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For the full HTML page with the live tool, visit https://uttir.com/color-screen.
This file is the markdown rendering at https://uttir.com/color-screen.md. See https://uttir.com/llms.txt for a site-wide summary.