Overbright LCD?

Hey guys, I recently did a layout with a darkish theme, and a lot of people told me it was so dark they couldn’t see much. It looked fine on my monitor though, I’m wondering if there’s a way to test if my monitor is overbright compared to one of yours?

Edit:// I just looked at the same layout on my old CRT and I could barely see anything.

My laptop doesn’t seem to have Brightness and Contrast controls, only brightness (its a dell… so it has those function + up and down keys to control LCD brightness)

How could I fix this?