May I suggest a solid white background. Here are some literal bullet points in no specific order:
- The "wireframe reveal" in the logo depicts a faux transparency with a white background. This illusion gets lost with the gradient.
- White would match the rest of the website buttons and text spaces, and contrast with the soft gray background.
- The brick color used for the different sections is highlighted (meaning it pops out better) when on a plain white background. (example of this is the forum)
- Some people with certain degrees of color blindness may potentially have some trouble reading the black font as it approaches the darker blue of the gradient.
- The blue gradient is not used anywhere else on the website, so there really is no "tie-in" to anything else.