What a yellow screen is good for
Yellow is the brightest colour a screen can produce short of white, since it fires the red and green subpixels together at full output. That makes it the best choice when you want maximum visible light with a warm cast rather than a clinical one.
- Warm fill light that flatters skin more than plain white.
- High-visibility backdrop for photographing small dark objects.
- Checking red and green subpixels together for output imbalance.
How to use it
- Press Full screen, or click the icon in the corner of the preview. The colour fills the display and everything else disappears.
- Set the brightness and warmth to suit the room, and turn on Keep awake so the screen does not sleep.
- Press Esc to come back. Your settings stay in the address bar, so the link reproduces this exact setup for anyone you send it to.
Questions
Is looking at a yellow screen bad for my eyes?
Not inherently, but a bright screen held close for a long stretch causes strain. Drop the brightness slider to around 60% and warm the temperature past 4000K, and look away from the screen every twenty minutes.
Will my screen go to sleep while this is open?
Not if you turn on Keep awake. It uses the browser wake lock, which asks the operating system to keep the display on with no input until you leave the page. It works in Chrome, Edge, Safari and most mobile browsers.
How do I download a yellow background image?
Open the download panel, pick a format and a size, and the yellow image is generated in your browser and saved straight away. PNG, JPG and WEBP are available from 1×1 pixel up to 8K, with nothing stored on our side and no watermark.
Does the yellow screen work on a phone, tablet or TV?
Yes. On a phone or tablet, add the page to your home screen and it opens straight into the yellow screen. On a TV, open the link in the built-in browser or cast the tab, then use the fullscreen button.
Can I get a screen in an exact shade rather than this yellow?
Yes. Any hex colour has its own page — put the code after /screen/, so #ffff00 lives at /screen/ffff00. Those links are shareable, so you can send someone the exact colour you mean.
Put this screen on your site
The embeddable version is the screen and nothing else, sized to whatever box you give it.