The highest contrast ratio of the Viewsonic VA2445 is 1000:1. That's 100% less contrast ratio than the most frequently found dynamic contrast ratio of 20000000:1. PC screens of a similar age and type to the VA2445 dynamic contrast ratios range from Mega Contrast to 100000000:1.
We compared this PC screen to all the other PC monitors that have a 1000:1 dynamic contrast ratio and we think because of it's better review score, the Samsung S23B350 is also worth considering.
If the contrast ratio of this PC screen is not high enough for you then you might want to look at the ET220a (10000:1), or the ES240d Slim (10000:1) both from Edge10 or the HP ZR22w (3000:1).