That's not as bad as if you were in the bay area, but it's not good. I assume you're in the Denver area and not out in the boonies?
FTE software engineers in Denver should be $80k minimum.
4 weeks vacation/sick time + 10 paid holidays, $80,000 + $9,230 = $89,230
Medical, $89,230 + $3600 = $92,830
Self-employment tax, $92,830 * 1.0765 = $99,931
That by itself calls for almost $50/hour. Add vision/dental, retirement plan, and whatever else regular employees get, plus the fact that you spend more time on your taxes, and do it throughout the year (you're remembering to pay quarterly estimated tax, right?).
Now, where's your risk compensation? The company is hiring contractors because they're easily disposable. You could be dropped at any moment.
Where's the compensation for the value of the flexibility you're providing the company?
Contracting as a 1099 calls for a 2x multiplier over nominal FTE rates. At least. You should be getting $80+/hour just for breathing.
And would you really only be worth an $80,000 salary? Just how junior are you?