The LG 24M45 has a maximum contrast ratio of 1000:1. That's 100% less contrast ratio than a 20000000:1 PC display, which is the most frequently found contrast ratio. Across all PC screens of a comparable spec and age to the 24M45 the contrast ratio ranges from Mega Contrast to 100000000:1.
We compared all the other PC displays that have a 1000:1 dynamic contrast ratio to this PC display and we think the Samsung S23B350 which has a better Rating; or the Asus VS228D which is cheaper are also worth considering.
If the contrast ratio of this flatpanel monitor is not high enough for you then you might also want to consider the HP ZR22w (3000:1 and higher rated) or the ET220a (10000:1 and cheaper), or the ES240d Slim (10000:1 and cheaper) both from Edge10.