The Acer G277HL has a maximum contrast ratio of 100000000:1. That's over twenty times the contrast ratio of a 5000000:1 PC display, which is the most common contrast ratio.
A 100000000:1 dynamic contrast ratio is in fact the best contrast ratio across all PC displays that have been on the market for around the same time as the G277HL.
Across similar types of PC monitor the worst contrast ratio is Mega Contrast.
We think you might also be interested in some of the other LCD screens that have a 100000000:1 dynamic contrast ratio currently available including because of it's better review score, the Acer G257HL ($123.99).