Silver and Gold Players can play together. Gold and Platinum players can play together. With Platinum or above, it is the same 1 tier difference.

Can a gold 3 play with a Silver 2?

Players at any level in Iron, Bronze, or Silver can queue with each other. The same goes for all Silver and Gold players, as well as all Gold and Platinum players.

Can Gold 1 play with Platinum 3?

As players are climbing in ranked games, the system does limit which ranks can play together. Iron, Bronze, and Silver ranks can play together without any limitations. Silver plays can join gold players in the queue, and gold players can have Platinum friends on their team.