Our Windows Color Picker tool has an inbuilt magnifier and allows you to save full palettes of colors.
Posted in the ColorPic Forum.
Windows Display Scaling
Just downloaded for a quick demo., but doesn't seem to work with high DPI scaled displays, the program seems unaware of the display scaling Windows is using. Without this fixed the program is pretty much useless, but good news is it shouldn't be hard to fix. The cursor colour needs to sync with the displayed colour. It isn't an offset problem, but a scaling problem, as far as my simple testing has shown.