The ASUS PA279CRV has remarkable accuracy. It comes factory-calibrated, and the 'sRGB' Preset Mode locks colors well to the sRGB color space. There are minimal inaccuracies, and gamma and the color temperature are great. Using the sRGB mode locks a few settings, including Brightness, as this mode is meant to be used at a low brightness. However, you can use another picture mode that has more customizable settings, including the brightness, but it less accurate, as you can see here in 'User 1.'

It also has other picture modes targeted for various color spaces, including DICOM used in medical imaging. You can see the results of them below, but keep in mind that the white balance and color inaccuracies are in comparison to the sRGB color space, so it's expected that these results seem inaccurate. You can also see all the default settings for each mode here.