Where does “oranĝa” come from?

oranĝa (Esperanto) comes from Esperanto oranĝo, from English Orange, from French Orange, from Spanish naranja, from Old Spanish naranja, from Arabic نَارَنْج, from Persian نارنگ, from Sanskrit नारङ्ग — date palm.

oranĝa (Esperanto): of or relating to oranges; orange orange colour

Definitions

of or relating to oranges; orange orange colour

Ancestry of “oranĝa”, step by step

Step	Language	Word	Meaning
1	Esperanto	oranĝo	orange
2	English	Orange	Relating to the Orange Order
3	French	Orange	Orange
4	Spanish	naranja	orange; Pertaining to Ciudadanos, a Spanish...
5	Old Spanish	naranja	orange
6	Arabic	نَارَنْج	bitter orange
7	Persian	نارنگ	bitter orange
8	Sanskrit	नारङ्ग	the orange-tree; the juice of the pepper plant;...
9	Dravidian	dra	—
10	Proto-Dravidian	*cīntu	date palm

Every word from Proto-Dravidian *cīntu →Every word from Dravidian dra →Every word from Sanskrit नारङ्ग →