system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: When I look at my screen from an extreme angle, why do some colors reverse?

For example, white appears blue when I tilt my laptop screen forward (almost flat) and look at it.
gpt
It's because the screen is polarized.

Put simply, the display is essentially filtering the light so that it comes out right towards you. Some of the light inevitably gets scattered, though, so when you tilt your screen, what you're seeing is the light that got scattered.

When white light gets scattered, blue scatters the most (same reason the sky is blue). So, the white light appears blue when you look at your monitor at an angle.

The reason this happens less when you're tilting the screen to the side instead of forwards/backwards is that the designers of the display tune the light so it goes out at a wider horizontal angle, which comes at the expense of letting it go out at a wider vertical angle.