aestheticsymbols
Use in a combo

North-west arrow copy & paste

↖ is north-west arrow, a plain-text Unicode symbol from the Arrows block. On Aesthetic Symbols it lives in the arrows & pointers collection, tagged arrow. As plain text it takes on the font and colour of wherever you paste it — a bio, a username, a caption or a stream title.

Unicode
U+2196
HTML entity
↖
CSS content
\2196
JavaScript
\u{2196}
UTF-8 bytes
E2 86 96
Made of

U+2196 ↖ · Arrows

Will it show up? · Long-established text symbols

Plain-text characters from blocks that mainstream desktop and mobile fonts have covered for years. These are the safe ones.

Worked out from how each character is encoded, not from a test on a real device.