If there is no blue light on your screen at all, here’s what it’ll look like:
That’s why screens emit the full light spectrum.
Blue light truly is harmful for us, because it controls our circadian rhythm – it tells our brain when it’s time to fall asleep and when you see it during the night from your PC, you can’t fall asleep – your brain thinks that it’s still a day.
What you can do is to try a blue light filter like the one from the picture above – Iris.
There you can control how much blue light you’ll get. You can decrease it till 100% like in the picture or you can make it something like this:
It’s entirely up to you which is why I love Iris.
During the day I let my screen emit more blue light because it is closer to the light that surrounds me.
At night I block almost all of it, which has improved my sleep a lot.
