63/40

Interval information

Ratio	63/40
Factorization	2-3 × 32 × 5-1 × 7
Monzo	[-3 2 -1 1⟩
Size in cents	786.4222¢
Name	narrow minor sixth
Color name	zg6, zogu 6th
FJS name	[math]\displaystyle{ \text{m6}^{7}_{5} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	11.2992
Weil norm (log2 max(n, d))	11.9546
Wilson norm (sopfr(nd))	24
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The septimal narrow minor sixth or hemifamity minor sixth (frequency ratio 63/40) is a 7-limit interval which is well approximated in several equal step tunings, most notably 198edo.