Not an expert (though I did work in a library when I was in high school and did repair books there - though I wasn’t the one to buy the tape), but I would assume that these are good options:
If you want something that’s archive-quality, I’d recommend calling your local library, or someone who does antique restorations. Otherwise, the suggested made in the last post are probably adequate.
I’m not an archivist nor any form of professional. I’ve been using Scotch 845 Book Tape since 1992 for certain pages and volumes of material I maintain for reference purposes. None show any sign of failure or discoloration.
A follow up comment. I use 845 tape as a permanent reinforcement to page edges that will be comb bound into books. Thus in my application it not usually applied to a printed part of paper. I’ll stand by it’s durability and lack of discoloration but gotpasswords comment made me realize my application does not care about your acid-free preference.