&gt; <i>few users have screens that accurately reproduce 100% of sRGB.</i><p>All currently selling Apple computers (at least phones, tablets, laptops, and desktops, I’m not sure about the watches) are extremely close to sRGB. So that’s a considerable proportion of computer&#x2F;mobile device users.<p>Other vendors’ devices have a much spottier record, but matching sRGB is by no means an impossible goal.<p>More generally, screens can be precisely characterized (either at the factory or by end users) and color management software can pipe pixel colors through a lookup table on their way to the display, so that at least in-gamut colors appear correctly.<p>Sadly Windows and Linux didn’t support proper color management at an OS level for many years, so lots of software on those platforms still doesn’t do it correctly. And web browsers on all platforms punt on correctly doing color management for CSS colors, with the excuse of matching non-color-managed Flash.<p>Even more unfortunately, neither iOS nor Android has any color management whatsoever. iOS gets around this by making sure all the displays have nearly identical color (at least on recent machines), but on Android getting accurate color is a crapshoot.<p>Then there are televisions, for most of which color is a complete joke.