10:12:15:18

Chord information

Harmonics	10:12:15:18
Subharmonics	1/(18:15:12:10)
Intervals from root	1/1 – 6/5 – 3/2 – 9/5
Cents from root	0¢ 316¢ 702¢ 1018¢
Step intervals	6/5, 5/4, 6/5
Step cents	316¢, 386¢, 316¢
Color name	gu-7 or g7
Prime limit	5
Genus	32 ⋅ 5 (45)
Intervallic odd limit	9
Otonal odd limit	15
Utonal odd limit	15
Consistent edos (d≥2)	12edo*, 19edo**, 34edo*, 38edo*, …
* 2≤d<4; ** 4≤d<8; *** 8≤d<16; …

10:12:15:18 is a minor seventh chord found on the iii (5⁄4) and vi (5⁄3) of Ptolemy's intense diatonic scale (Zarlino), perhaps the most common 5-limit diatonic. See also its homonym 12:15:18:20 (1/1–5/4–3⁄2–5/3), an added sixth chord.