19/12

19/12 |-2 -1 0 0 0 0 0 1>

795.558 cents

File:Jid 19 12 pluck adu dr220.mp3 sound sample

19/12 is a 19-limit interval, about 795.6 cents in size, that is very close to the minor sixth of 12edo (800 cents). Interestingly, 19/12 * 19/15 = 361/180 (1204.8 cents), which is very close to an octave.