Full Screen Color Test
Fill your screen with any solid color to test monitors, backlight bleed or create mood lighting. Free.
✓ 100% free ✓ No sign up ✓ Runs in your browser — nothing uploaded
Preview — go fullscreen for the real test
Fill your screen with any solid color. Great for testing monitors, backlight bleed, or as a mood light. Esc to exit.
How to use Full Screen Color Test
- 1Open Full Screen Color Test — it works right on this page.
- 2Use the controls above.
- 3Copy or download the result. No sign up needed.
Questions
Is Full Screen Color Test free?
Yes. Full Screen Color Test is 100% free with no limits, no watermark, no sign up and no email required.
Is my data sent anywhere?
No. Everything is calculated locally in your browser. Nothing you type is sent to or stored on any server.
Does Full Screen Color Test work on my phone?
Yes. Full Screen Color Test works in any modern browser on iPhone, Android, Windows, Mac, Linux and Chromebook. No app or install needed.
Do I need to create an account?
Never. There is no sign up, no login, no email and no paywall. Just open the page and use it.