Blue light from your PC's screen may disrupt your circadian rhythm. Here's how to use a blue light filter with built-in night modes on your PC or Mac .

The sunlight primarily consists of red, orange, yellow, green, and blue light rays and many shades of each of these colors. Combined, this spectrum is what we refer to as white light or sunlight.

Want to reduce your blue light exposure for better sleep? Here’s how to turn on Windows’ built-in filter.