This color screen fills your monitor, laptop, TV, tablet or phone with any color you choose. Pick one of the 12 test colors, use the color picker, or type an exact hex code such as #FF8000, then open it as a full screen color with one click. A dimmer, a timer that fades the color out, a switch that keeps the screen awake and a color cycle mode make it useful for checking pixels, lighting a photo or video, matching a brand color or showing a plain background. It works in Chrome, Edge, Safari and Firefox on Windows, macOS, ChromeOS, Android, iPhone and iPad.
How to use the color screen
- Click one of the 12 color squares, or open the color picker, or type a hex code in the box and press Enter.
- Adjust the brightness if you want a darker version of the color.
- Optional: pick a timer, and choose Cycle colors to step through the 12 colors by themselves.
- Click the preview, tap it, or press F. The color fills the screen.
- In full screen, the left and right arrow keys, or a sideways swipe, change color, and up and down change brightness. Esc or a double tap exits.
- Press Copy link to share the exact color and settings, or Save image for a PNG.
The 12 colors and what each checks
| Color | Hex | Subpixels lit | Shows |
|---|---|---|---|
| White | #FFFFFF | Red, green, blue | Dead pixels, dust, tint, even backlight |
| Black | #000000 | None | Stuck pixels, backlight bleed, OLED black |
| Red | #FF0000 | Red | Red subpixel faults |
| Green | #00FF00 | Green | Green subpixel faults, the brightest primary |
| Blue | #0000FF | Blue | Blue subpixel faults |
| Yellow | #FFFF00 | Red, green | Stuck blue subpixels |
| Cyan | #00FFFF | Green, blue | Stuck red subpixels |
| Magenta | #FF00FF | Red, blue | Stuck green subpixels |
| Orange | #FF8000 | Red, half green | Warm light with no blue |
| Pink | #FF69B4 | Red, some green and blue | A soft, warm light |
| Purple | #800080 | Red and blue at half | A dim mixed color |
| Grey | #808080 | All at half | Evenness and dirty screen effect |
The readouts under the screen show the exact hex code and RGB values being drawn, after any dimming, so you can copy them into other apps.
Pick any color with a hex code
Type a code with or without the # sign. Six digits set red, green and blue from 00 to FF, and three digits are a short form, so #F80 becomes #FF8800. The Color readout names the nearest common color, which helps when a code alone means little. Typical uses:
- Brand and design colors: check how a brand color looks full screen on different devices.
- Lighting a photo or video: match a background or rim light to a product or set.
- Comparing screens: open the same link with Copy link on two devices and hold them side by side.
Why a color looks different on another screen
The same hex code produces slightly different light on every screen. Wide color monitors, especially on Windows, can show saturated colors more vividly than a standard monitor unless their sRGB mode is on, and settings such as Night light, True Tone or a Vivid picture mode shift colors further. If a color must match across devices, turn those settings off and check the screens with a color accuracy test.
Colors with their own pages
Each of these has shades and advice for its main use:
- White screen as a light source, with warm to cool white
- Black screen for OLED, cleaning and backlight checks
- Red screen light for night vision and stargazing
- Green screen and blue screen for chroma key backdrops
- Yellow screen test for stuck blue sub-pixels and tint checks
- Orange screen light for a warm glow at night, with a sleep timer
- Pink screen light and purple screen light for selfies, calls and room glow
- Grey screen for uniformity and burn in checks
- Rainbow screen for slowly changing colors
What a color screen in a browser cannot do
The page sets the color of every pixel, but it cannot change your screen's backlight, color settings or color range, and it cannot show colors outside what your screen can display. Safari on iPhone keeps its address bar visible. Cycle colors steps once every few seconds and is not a fast flashing stuck pixel fix. For pixel faults, the guide on how to fix dead pixels explains what can and cannot be repaired.
Color screen questions
How do I make my screen one solid color?
Click a color square or type a hex code, then click or tap the preview, or press F. The color fills the whole display and the pointer hides. Press Esc, or double tap on a phone, to return. Use the arrow keys or swipe sideways to switch colors without leaving full screen.
What is a hex color code?
A six digit code for a screen color, written after a hash sign. The first two digits are red, the next two green and the last two blue, each from 00 to FF. #FF0000 is pure red, #FFFFFF white and #000000 black. A three digit code such as #F80 is short for #FF8800.
Which colors show dead pixels best?
White shows dead, dark pixels. Black shows stuck, lit pixels. Red, green and blue show which subpixel is at fault. Turn on Cycle colors at 3 seconds to see them all in turn, or use the dead pixel test for a guided check.
Can I make my screen change colors by itself?
Yes. Choose 3, 10 or 30 seconds under Cycle colors and open full screen. The page steps through all 12 colors in turn. For colors that blend smoothly instead, use the rainbow screen.
Can I save a solid color image?
Yes. Choose a size next to Save image, from your own screen's resolution to 3840 × 2160 or a 1080 × 2400 phone size, and save a plain PNG of the color at the brightness you set.