Sometimes I just wanna relax to some mellow stuff nahmsayin.
Okay, these will likely not all be perfect picks for you. I got a little distracted and just picked out most of my albums that I personally deem "chillable", despite that not being the case for everyone.
They are most definitely not in any sort of order.
Arp - The Soft Wave
Loney Dear - Hall Music
This Will Destroy You - Young Mountain
Tides of Man - Young and Courageous
Washed Out - Within and Without
Yeasayer - Fragrant World
Star****er - Reptilians
Easy Star All-Stars - Dubber Side of the Moon
The XX - Coexist
Steven Wilson - Luminol/Watchmaker
Washed Out - Paracosm
Tame Impala - Lonerism
Shearwater - The Golden Archipelago
Owen - Ghost Town
Grizzly Bear - Horn of Plenty
Electric Wurms - Musik Die Schwer Zu Twerk
Cut Copy - Free Your Mind
Cut Copy - Zonoscope
Bon Iver - For Emma, Forever Ago
Boards of Canada - Tomorrow's Harvest
Personal favorites are Washed Out, Tides of Man, Yeasayer, Easy Star All-Stars (the remix album I posted here is soooo good), Tame Impala, and Cut Copy - especially in the chill department.