The blue on black text in site 1 fails a standard colour contrast analysis for all but large text which is not the case here (contrast ratio 3.6:1). You should be looking a colour contrast of over 5:1 to be W3C compliant. There are tools available on the web to help you make informed decisions about accessibility.
The Web Accessibility Tools Consortium [WAT-C] provides a collection of free tools to assist both developers and designers in the development and testing of accessible web content. Site is here:http://www.wat-c.org