Full-Screen Color Display Tool
Fill your entire screen with any color for light box tracing, display testing, ambient lighting, or photography backgrounds.
Runs in your browser. No data leaves your device.
Frequently Asked Questions
How does the Screen Color Filter work?
The tool sets a full-viewport div's background-color CSS property to your selected color value. In full-screen mode (via the Fullscreen API), this colored div fills your entire monitor edge to edge. The color picker updates the hex value in real time, and preset buttons set predefined hex values. No canvas or image processing is involved -- it is purely CSS background-color rendering.
What is this used for?
Common uses include light box tracing (hold paper against a white screen), display color calibration, photography lighting, ambient room lighting, and creating solid color backgrounds for video calls.
Can I use any color?
Yes. Choose any color using the color picker, enter a hex code, or select from preset colors including pure red, green, blue, white, and black.
Does it work in full screen?
Yes. The tool fills the entire browser window with your chosen color. Use your browser's full-screen mode (F11) to cover the entire display with no browser chrome.