8/3

Interval information

Ratio	8/3
Factorization	23 × 3-1
Monzo	[3 -1⟩
Size in cents	1698.045¢
Name	perfect eleventh
Color name	w11, wa 11th
FJS name	[math]\displaystyle{ \text{P11} }[/math]
Tenney norm (log2 nd)	4.58496
Weil norm (log2 max(n, d))	6
Wilson norm (sopfr(nd))	9
[sound info]
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8/3 is the ratio between the 3rd and 8th harmonics; one octave above 4/3. In non-microtonal music, it is often referred to as the perfect eleventh.