54:64:81, also known as the Pythagorean minor triad, is a just 3-limit minor triad. Its third differs from the third of the much simpler 5-limit minor triad 10:12:15 by only the 81/80 comma.

Chord information
Harmonics 54:64:81
Subharmonics 1/(96:81:64)
Intervals from root 1/132/273/2
Cents from root 294¢702¢
Step intervals 32/27, 81/64
Step cents 294¢, 408¢
Color name wa or w
Prime limit 3
Genus 34 (81)
Intervallic odd limit 81
Otonal odd limit 81
Utonal odd limit 81
Consistent edos (d ≥ 2) 12edo**, 17edo*, 24edo*, 29edo*, …