For web publishing, the usual common denominator is sRGB. It’s the standard color space most browsers, consumer monitors, and online services are designed around, so exporting your images in sRGB ICC will give you the best chance of reasonably consistent results across different devices.

You can’t control how other people’s screens are calibrated, so there isn’t a monitor setting that will make your photos look perfect everywhere. The practical approach is:

• edit on a reasonably accurate display
• use sRGB as your working/output color space for web images
• embed the sRGB profile when exporting if your software allows it

That won’t overcome badly adjusted screens, but it does match the most widely supported standard and avoids larger color shifts that can happen with wider-gamut spaces.