Blackdye

Blackdye is an AG scale with step pattern 5L 2M 3S (SLMLSLMLSL), equivalent to the 5L 5s mos with two of the small steps made larger and the other three made smaller. Unlike diasem, another diatonic-based scale with comma steps, blackdye is not chiral. It can be tuned as a 2.3.5 subgroup JI scale or a tempered version thereof, where L represents 10/9, M represents 16/15, and S represents 81/80. The scale can be generated by an alternating chain of minor thirds and major thirds.

"Blackdye" is a name given by ks26. The name is a pun on "blackwood" and "diatonic" since its step sizes are intermediate between that of diatonic (5L 2s) and blackwood[10] (5L 5s).