Dark does ×1 to Dragon

Generations VI to IX, single types. The other way round, Dragon against Dark, is ×1.

69 Dark and 70 Dragon species among the 1025 this site covers.

Attacker, Dragon and Dark Roaring Moon sprite

damage×1Generations VI to IX

Defender, Dragon Goodra sprite

Goodra #0706

Dark did not exist in Generation I, so Dark against Dragon has no value there.

Strongest Dark attackers

Roaring Moon leads Dark at Atk 139

Sturdiest Dragon defenders

Dual types that change the answer