Where does “Шахла” come from?

Шахла (Russian) comes from Persian شهلا, from Arabic شَهْلَاء, from Arabic أَشْهَل.

Ancestry of “Шахла”, step by step

Step	Language	Word	Meaning
1	Persian	شهلا	dark blue mixed with red
2	Arabic	شَهْلَاء	—
3	Arabic	أَشْهَل	—

Шахла — Etymology, Origin & Word History | Etymology Explorer