How to properly set up the Dell S2721DGFA monitor?

Question

Monitors

Help with display settings on Dell S2721DGFA monitor

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Here is the Dell S2721DGFA on the left and the dell u2317hm on the right. The settings are all down to default, but on the right monitor the image is more pleasant and soft, and on the left it is more yellowish.
I have already tried all sorts of modes, brightness, contrast and color transfer. I want to set it up so that the image on both monitors is more or less the same.
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Answer 1

You need to calibrate your monitor(s). Or buy a calibrator (spectrophotometer) and deal with the theory of color reproduction and software, or invite a specialist (for money, of course). But I will not give guarantees that you will like the result of calibration according to the (photo) standard.