My very first project was a bookcase in oak. I spent a lot of time fussing
to get it to match the 20 yo golden oak stair case. Surprise surprise; two
years later it is too dark.
Maybe no one but me notices it, but either the stairs have lightened (which
seems unlikely considering its age) or the bookcase darkened.

In general, trying to match is a fool's errand. Not infrequently, two parts
of the same piece of wood will stain differently. Good luck.