That analogy doesn't work because your screen cannot reproduce every color that is perceptible to people.
#000 is as dark as your screen is when the screen is turned off, which is not the darkest color that you can perceive. And if at any point it is uncomfortable to look your screen because it is blindingly bright, then the screen brightness is set too high.
#000 is as dark as your screen is when the screen is turned off, which is not the darkest color that you can perceive. And if at any point it is uncomfortable to look your screen because it is blindingly bright, then the screen brightness is set too high.