Fullscreen Colour
Make device's screen to be solid color. Add and remove colors to the grid. Click on a color to change.
Colors
Click to lock color — Scroll to change luminosity copy Star
Color Screen
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Full Black Screen, White Screen & Color Screen Tool
Make your screen any color of your choice using the color picker from below. You can use it to exactly match your screen with your theme to make it esthetically more appealing, or to any color that can help you identify dust particles more quickly and effectively.
Test Your Screen with Fullscreen Color Picker
Whether you're worried about pixel defects like dead or stuck pixels, backlight bleeding, gray uniformity, color uniformity, clouding, vignetting, dirty screen effect, IPS glow, OLED mura, OLED banding, burn-in, image retention, or other issues, this site can help you test for them.
Most Loved Full Screen Color Test Tool by Display Colors
Here, you can enter any favorite, browser-recognized color name, or hexadecimal color code to get a full screen preview of that color, such as gold, diamond, black, white, #7B6F8E, etc. Choose Your Color Screen-
Fullscreen Color Picker and Color Converter - Simple Internet Tool
This is a fullscreen color converter and picker. It can pick a color and convert the color to hex color, rgb, hsl, hcl and lab just by the movement and scroll of the mouse.
Full Page Color
Turn your monitor into a colored light source!
Color-Screen.com
Color fullscreen page to find dirty spots or dead pixels on your screen.
FullScreen Color Picker - MarsScreen.com
The color picker makes it easy by allowing you to click and drag your cursor inside the picker area to highlight a color on the screen. You can then input Hex, RGB and HSL values to search for a particular color in the fields.