A pure blue screen to test the blue subpixels, use as a photo backdrop or as cool ambient light.
When time is up, full screen closes on its own.
Put a white or warm screen in front of you and turn up the brightness. It lights your face softly, like a ring light.
Black shows dust, white shows smudges. Use both and nothing gets missed.
Cycle through red, green, blue, white and black. A dot that doesn't change color is a dead or stuck pixel.
A soft color at low brightness works as a night light or for reading without turning on a lamp.
To test the blue subpixels and look for dead pixels. Also as ambient light or a colored backdrop for photos and video.
Bright blue light can make it harder to fall asleep. At night, use low brightness or pick a warm color.
Yes. Use the color picker or type a HEX code, for example #1E90FF for a lighter blue.