What is a magenta screen used for?
A magenta screen turns a display into a flat, even surface of one colour, used for lighting, backdrops, tracing and checking a panel for faults.
Magenta has no single wavelength — your eye builds it from red and blue with nothing in between. On a display that means the red and blue subpixels at full output with green completely dark, which makes it a precise test for green subpixel leakage.
- Vivid accent lighting for fashion and music photography.
- Testing red and blue channels while green stays off.
- A backdrop colour that almost never appears in real scenes.
Magenta is the red screen and the blue screen fired together with nothing in between. For a softer version of the same cast there is the pink screen, for a cooler one the purple screen, and the white screen when you want every subpixel lit.
How do you make your screen magenta?
Open this page and press Full screen, or press F. The colour fills the display and every other element disappears until you press Escape.
The colour is painted before any script runs, so there is no flash of white before the page settles. On a phone or tablet, add the page to your home screen and it opens straight into the screen with no browser interface at all.
Is looking at a magenta screen bad for your eyes?
Not inherently, but a bright screen close to your face for a long stretch causes strain. Lower the brightness and warm the colour temperature.
Digital eye strain comes from reduced blink rate and sustained focus at one distance rather than from the colour itself. Drop the brightness slider to around 60%, warm the temperature past 4000K, and follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds.
Will my screen go to sleep while this is open?
Not with Keep awake switched on. It holds a browser wake lock, which asks the operating system to keep the display on with no input.
The wake lock is released the moment you leave the page, so it cannot keep your screen on by accident. Browsers also drop the lock whenever the tab is hidden; this page takes it again automatically when you come back.
How do you download a magenta background image?
Open the download panel, choose a format and a size, and the magenta image is generated and saved immediately. No watermark, no account.
PNG, JPG and WEBP are available from a single pixel up to 8K (7680 × 4320). PNG files are generated on the server as a one-bit palette image, which is why even an 8K download is only a few kilobytes. Direct links work too: magenta-1920x1080.png.
Does the magenta screen work on a phone, tablet or TV?
Yes, on any device with a browser. Add it to your home screen on mobile, or open the link in a TV browser and tap once.
On iOS, Safari does not allow a web page to enter true fullscreen, so the page fills the viewport instead and the result is the same once you add it to your home screen. On a TV, casting the tab also works.
Can you get a screen in an exact shade rather than this magenta?
Yes. Every hex code has its own page: put the six characters after /screen/ and that link opens the exact shade on any device.
This magenta is #FF00FF. Any other shade works the same way: put its six characters after /screen/ and that address opens the exact colour. Because the colour travels in the URL, sending someone the link is a reliable way to agree on a shade without screenshots or colour pickers. The named colour screens all have their own pages, and the screensavers, prank screens and display tests live in the full list of screen tools.
Put this screen on your site
The embeddable version is the screen and nothing else, sized to whatever box you give it.