UtilityBaseScreen Tools
Fullscreen Color
Pick any color and display it fullscreen with brightness control.
Updated January 10, 2026
How to use the fullscreen color
- 1Choose a color with the picker or enter a hex code.
- 2Click the fullscreen button (or press F) to fill the display.
- 3Adjust brightness with the slider if needed.
- 4Press Esc to exit fullscreen at any time.
Common uses
- Create colored mood lighting from a spare display.
- Match an exact brand color for a video backdrop.
- Test panels with custom colors beyond pure RGB.
Frequently asked questions
How do I enter an exact color?
Type a hex code such as #FF6B00 into the color field, or use the visual picker. The screen updates immediately as you change the value.
Can I adjust the brightness?
Yes. Use the brightness slider in the toolbar to dim the screen without changing your system settings. This is a software dimmer applied on top of the color.
Will my screen turn off while the color is displayed?
The tool requests a screen wake lock in browsers that support it, which prevents the display from sleeping while the tool is active. If your browser doesn't support wake locks, adjust your system sleep settings for long sessions.
Does this work on phones and tablets?
Yes. On mobile, tap the fullscreen button to hide the browser interface where the platform allows it. Tap anywhere on the screen to bring the controls back.
About this tool
Fullscreen Color is the flexible version of the solid screen tools: choose any color with a picker or type a hex code, then fill the display with it. Photographers use specific tones for mood lighting, streamers match brand colors for backdrops, and testers step through custom colors to inspect panels. The toolbar includes a brightness slider, quick-select swatches for common test colors, and the same fullscreen and keep-awake behavior as the fixed color screens.
Like everything on UtilityBase, the fullscreen color runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more screen tools here.
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