A yellow screen washes your display in bright, warm yellow with a single tap. This free online yellow screen works well as a low-blue reading light, for testing the red and green subpixels together, as a high-contrast aid, or for a cozy, warm ambiance. Make it fullscreen for an even yellow field, and adjust the brightness and warmth to match the room and the time of day.
What is a yellow screen?
A yellow screen is a full-screen display created by lighting the red and green subpixels together while the blue stays off. That makes it naturally low in blue light and pleasantly warm. A solid yellow field is a quick way to check the red and green channels at once, a comfortable warm light for reading in the evening, and a bright, cheerful backdrop for creative and mood-lighting use.
What people use a yellow screen for
Warm, low-blue reading light
With no blue channel, a yellow screen gives a warm glow that is easy on the eyes for reading in the evening or a dim room.
Test red & green subpixels
Yellow lights the red and green subpixels together, so a yellow field helps reveal faults in either channel in a single view.
High-contrast visibility aid
Bright yellow provides strong contrast that some people find helpful for visibility, signaling, or attention-grabbing displays.
Cozy, warm ambiance
A soft yellow wash brings a warm, sunny mood to a room, a photo setup, or a relaxed stream background.
How to use the Yellow screen
Open the page
The Yellow screen loads instantly in any browser — no app, sign-up, or download needed.
Go fullscreen
Click anywhere on the yellow area or press the F key to fill your whole display with yellow.
Adjust it
Fine-tune brightness and warmth, or switch to another color from the bar below the screen.
Exit or save
Press Esc to leave fullscreen at any time, or use Download to save the yellow screen as an image.
Yellow screen tool features
Adjustable brightness
Slide brightness from 10% to 100% to dim the yellow screen for night use or push it to maximum for cleaning and testing.
Warm & cool tint
Shift the yellow light from cool to warm to match your room, reduce evening eye strain, or flatter your face on camera.
OLED burn-in guard
An optional mode nudges brightness slightly every few seconds, protecting OLED and AMOLED panels during long sessions.
Keep-awake mode
Uses the browser Wake Lock so your display never dims or sleeps during calls, cleaning, or photography.
Download up to 8K
Export the exact color as a crisp PNG from 480p all the way to 8K (7680×4320) for wallpapers, editing, or offline use.
Pixel grid & custom HEX
Overlay a fine grid to pinpoint faulty pixels, or type any HEX code to display a precise custom color.
Yellow screen FAQ
Does a yellow screen reduce blue light?
Yes. Yellow is made from red and green subpixels only, so the blue channel stays off, giving a naturally warm, low-blue light that many find comfortable at night.
What does a yellow screen test on my monitor?
Because yellow mixes red and green, a yellow field lets you check both subpixels at once — look for dark dots or uneven color to spot problems in either channel.
How do I make the yellow warmer or softer?
Lower the brightness and nudge the temperature toward warm for a softer, more amber tone that suits evening reading and cozy ambiance.
Is the yellow screen free to use?
Yes. It is completely free with no ads, no account, and no limits. Open the page and start using the yellow screen right away.
Does it work on phones and tablets?
Yes. The yellow screen runs in any modern mobile or desktop browser — iPhone, Android, iPad, laptops and desktops — with no app to install.
How do I enter and exit fullscreen?
Click the screen or press F to go fullscreen. Press Esc (or F again) to exit. On mobile, tap once to expand and swipe or tap to return.
Will a yellow screen hurt my eyes?
It is a steady light source, no harsher than any bright web page. Lower the brightness for comfort and follow the 20-20-20 rule on long sessions.
Is it safe for OLED displays?
Yes, especially with OLED protection turned on. For long use, keep brightness moderate (60–80%) so static color does not risk burn-in.
Can I download the yellow screen as an image?
Yes. Open Download, pick a resolution up to 8K, and save a lossless PNG of the yellow color for wallpapers, video editing, or graphic design.
When to use a yellow screen
Choose a yellow screen for warm, low-blue light, a quick red-plus-green subpixel check, or a cheerful backdrop. For deeper display testing, view it together with pure red, green, and blue screens, and switch to white when you need the brightest, most neutral light available.
Why people trust this tool
This yellow screen is a lightweight, browser-based utility built for one job: giving you a clean, full-coverage color surface the moment you need it. There are no trackers, no accounts, and nothing is uploaded — every setting stays on your device. We keep fullscreen behavior stable across browsers, test mobile fallbacks, and update the controls when displays and browsers change, so the tool stays reliable whether you are checking a new monitor or lighting a video call.