Azure Perks:

Chat Prefix & Name Color
3x Diamonds Multiplier (In-Game Rewards)
500 Friend Slots
24 Max Party Size
Removed Chat Delay
Unlocks Reduced Chat Censorship
Stand Out In Chat & Tabs List
Lobby Wind Charge & Grappling Hook
Lobby /sit & /crawl
Chat Emojis (<3 gets turned into ❤, etc)
9 Exclusive Purchasable Cosmetics