@Eskie I see no noticable shift in color or contrast, and I was looking at it almost level from the sides and top/bottom.
OK. Had to check it out. The specs off the YiHi site identify it as a TFT IPS screen. Bad labeling on their part as by definition an IPS screen is not a TFT, and your description is consistent with the off axis performance of an IPS screen. They probably "translated" LCD IPS to TFT IPS thinking TFT equals an LCD.
OLEDs have become popular for their color saturation and power conserving abilities, but an IPS screen can still look excellent.