I’m really impressed by the Dell UP2414Q. I’d highly recommend it over just about any other external monitor. Color is consistent across the front, and quite accurate. It’s pretty bright with good contrast. And the high resolution is just stunning.
The only computer display I’m more impressed with at the moment is the 5k “retina” iMac display.
I'm not necessarily a good judge of monitor color quality and accuracy, but to my eye, it's fantastic. I'm normally right in front of it, but my partner is off to the side when we watch something on Netflix, and that angle doesn't seem to adversely affect color.