Looking for a Shortcut to Turn Off Display

Is there a way to turn off the display via a shortcut? I currently have it set to turn off the display after a certain amount of inactivity but sometimes I'm reading something or thinking while staring and the screen begins to turn off. I know I could increase the amount of time but then sometimes I just need a short break and would rather the screen be turned off so doing it by command would be nice.

I looked online and tried setting a keyboard shortcut to xset dmps force off but no luck.
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