15:18:21:25

Chord information

Harmonics	15:18:21:25
Subharmonics	1/(210:175:150:126)
Intervals from root	1/1 – 6/5 – 7/5 – 5/3
Cents from root	0¢ 316¢ 583¢ 884¢
Step intervals	6/5, 7/6, 25/21
Step cents	316¢, 267¢, 302¢
Color names	gu yo-6 zogu-5 or g,y6(zg5)
Prime limit	7
Genus	32 ⋅ 52 ⋅ 7 (1575)
Intervallic odd limit	25
Otonal odd limit	25
Utonal odd limit	175
Consistent edos (d ≥ 2)	4edo**, 8edo*, 19edo*, 23edo*, …
* 2 ≤ d < 4; ** 4 ≤ d < 8; *** 8 ≤ d < 16; …

15:18:21:25 is a condissonant diminished seventh chord.

In diminished temperament, the 25-odd-limit intervals within this chord are tempered together with 7-odd-limit intervals, resulting in a 7-odd-limit essentially tempered chord.