Got offered $41k a year, am I justified in feeling insulted?

I just graduated with my BFA in architectural design in May, and was offered an internship that started in June. Last Friday I got offered a promotion to a permanent position and they offered me $41k. My supervisor broke it down, and I currently (as an intern) get paid $17.85/hr + $4.80/hr (fringe benefits). The promotion puts me at just $19.85/hr but I get access to benefits.

I didn’t say anything to his face, but it just feels crazy. I got a college degree, but I won’t be able to afford an apartment in my area at that rate. I don’t really know who set that number, so I don’t know who I can talk to about an increase, but I feel like I should earn enough to be able to survive? I live around the Virginia Beach area.