Dark does ×1 to Ice

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

69 Dark and 48 Ice species among the 1025 this site covers.

Attacker, Dragon and Dark Roaring Moon sprite

damage×1Generations VI to IX

Defender, Ice Regice sprite

Regice #0378

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

Strongest Dark attackers

Roaring Moon leads Dark at Atk 139

Sturdiest Ice defenders

Dual types that change the answer