I’ve just been using the same brand of socks for ~15 years 🤷‍♂️ I just get like one pack every year and have never had to match anything since. I also have never understood the fancy-/patterned-sock craze, so that’s a non-issue.

That’s because you lost both of them

Pairing socks, and subsequently finding them paired when you need socks is severely underrated.