Is there a way of describing "darker" sounding guitar chords, like Am,!
Question: Is there a way of describing them other than describing them as dark-sounding?
Answers: Is there a way of describing them other than describing them as dark-sounding?
Ominous, minor (F wouldn't apply to that, though).
Minor chords are "darker" sounding chords. You mentioned Am and Em. F doesn't really belong in that category, unless you meant Fm.
Well, except for the "F" you've got their, I'd just call them minor. However I don't see how F is a dark sounding chord (1-3-5 major).
If you're looking for non-musical terms, then perhaps, "sad"?