How to use it
Tap any color tile and it fills your entire screen. In full screen, swipe left or right (or press ← →) or use the ‹ › buttons to switch colors. Tap once to show the control bar; leave it alone and the bar and mouse cursor disappear after a few seconds, leaving nothing but pure color.
- Any color: choose one with the color picker or type a hex code such as
#FF8800, then press Full screen. Recent colors are saved below for one-tap reuse. - Auto-change colors: every 5, 15 or 60 seconds the screen fades to the next rainbow color, like a mood light.
- The auto-off timer and keep screen on work the same as on the white screen. Press Esc or ✕ to exit.
- Bookmark a color by adding
?c=black,?c=red(or a hex like?c=ff8800) to the address — the page opens with that color selected.
Why use a black screen?
The black screen is the most popular solid screen because it removes almost all light without turning the display off.
- Cleaning your screen: fingerprints, smudges and dust stand out against black. Compare before and after wiping. Turning the device off is safest while you clean; use a dry microfiber cloth with light pressure.
- OLED displays: OLED pixels make their own light, so black pixels are switched off and use almost no power. On LCDs the backlight stays on, so a black screen still glows slightly and saves little power.
- Backlight bleed checks: in a dark room, a black screen reveals light leaking around the edges of a monitor. For a full check, use the dead pixel & backlight bleed test.
- Screen off without turning it off: keep audio or a lecture playing, or blank the screen during a presentation, with nothing on display.
Ways to use color screens
Solid red, green, blue and other colors are handy as light sources and for checks.
- Red screen: the rod cells you rely on in the dark are far less sensitive to deep red light, so a dim red light disturbs dark-adapted night vision less. That is why stargazers use red lights. Turn your device brightness down for this.
- Green and blue screens: use a tablet as a tiny chroma-key backdrop for small objects, or add a color wash to photos and video.
- Finding stuck pixels: on pure red, green or blue, a subpixel that never lights shows up as a dot.
- Mood and party lighting: show a color or turn on Auto-change colors. Point the screen at a wall or ceiling for softer light.
- Previewing a brand color: fill the screen with a hex code to see how it looks on a real device. The same hex looks slightly different from device to device.
Which color for which job
A quick guide for picking a color. Every tile opens full screen instantly, and you can swipe between colors to compare.
- Black: spotting smudges before cleaning, dimming an OLED screen without turning it off, checking backlight bleed in a dark room, finding stuck (bright) pixels
- White: lighting, tracing, finding dead (black) pixels and dust under the glass. For adjustable brightness and warmth, use the white screen.
- Red: low-glare light at night or for stargazing (with brightness turned down), finding red subpixels that never light
- Green and blue: checking those subpixels, a small chroma-key backdrop, colored light for photos and video
- Yellow and orange: warm mood lighting with little blue light
- Pink, purple and magenta: party and photo accent lighting, selfie backgrounds
- Gray: a mid-level screen for spotting uneven brightness (uniformity) or OLED image retention
OLED burn-in and eye comfort
Burn-in happens when the same shape — a logo, clock or taskbar — stays in the same place for a long time and those OLED pixels wear faster than the rest. A full-screen solid color has no shape to leave behind, and this tool hides its control bar and hints after a few seconds. Even so, hours of bright full-screen light shorten pixel life and drain the battery, so use the timer.
Auto-change fades slowly, with several seconds between colors and no flashing. If you are sensitive to light, lower the brightness. With your system’s Reduce Motion setting on, colors switch instantly without the fade.
Keyboard shortcuts
On a computer, one number key opens a color instantly.
- 1 black, 2 white, 3 red, 4 green, 5 blue, 6 yellow, 7 orange, 8 pink, 9 purple, 0 cyan
- ← →: previous / next color
- H or Space: show or hide the controls
- Esc: exit
FAQ
Does a black screen save battery?
On OLED screens (most recent high-end phones, OLED TVs and monitors) black pixels are off, so power use drops a lot. On LCD screens the backlight stays on, so the savings are minimal. If you don’t need the display, turning it off saves the most.
Can a solid color screen cause burn-in?
A uniform color has no shape to burn in — burn-in comes from the same image, like a logo or clock, sitting in one spot for a long time. This tool hides its controls automatically, but long sessions at high brightness still age OLED pixels and drain the battery, so use the timer.
Why is the address bar still visible on my iPhone?
Safari on iPhone often doesn’t let ordinary web pages go fully full screen, so the color may fill only the page area. Turning the phone sideways enlarges it. Android, iPad and desktop browsers cover the whole screen.
Is the color exactly what I typed?
The page sends your hex value to the screen unchanged, but what you see depends on the display’s color gamut, brightness and night-mode (blue light filter) settings. Turn night modes off when you compare colors.
Why use a black screen to clean my display?
A dark screen reflects room light, which makes fingerprints, dust and streaks on the glass easy to see. A white screen does the opposite and shows dust under the glass and dead (black) pixels. Power the device off and use a dry microfiber cloth to clean.
Do you have fake update or error screens for pranks?
No. Screens that imitate real operating system update or error screens can mislead people, so we don’t offer them. A plain black screen is the safe way to blank your display.