A past response identified the back wall as a Behr color. I don't use Behr, so will suggest that you look at Sherwin's Gray Screen/7071 for a similar gray. Sherwin has a lot of great grays.

what was the light gray paint by behr called i dont know how to look at past responses

It's called "Granite Grey" by Glidden. I saw it tagged on another photo of this room on this website.

I clicked on the pic and the wall color was tagged "Evening Hush" by Behr

Yes, it seems the dark gray is Behr, Evening Hush. The light gray people were asking about is Glidden, Granite Grey.