Why You Shouldn't Use White Text on a Black Background
Inverted text is text that has been switched from the default black-on-white color scheme to white-on-black. It is strongly suggested that you don't use this format of text for most printed materials - but what's the right thing to do for websites?.
Why Inverted Colors Are Not Suggested for Print
The following are some facts gathered by years of market research in the field of advertising:
While inverted text may look "cool", it's obviously not the best choice for any text that you want your users to actually read.
Why Those Rules Don't Necessarily Apply to the Web
One might expect the rules of print to apply across all media, but as we saw in our Font Analysls: Serif vs. Sans-Serif, the web is a significantly different medium with different rules.
The following are some reasons why the web might work better with inverted text:
Despite the above, I personally advise against using an inverted color scheme for primary content elements of a website. For whatever reason, the vast majority of web users I've worked with have shown an aversion to inverted schemes.
The highest readership seems to be attained by medium-to-dark gray text on a white background or dark-gray-to-black text on a light , neutral-colored background.
If you want to use inverted elements, try to limit yourself to focus areas, headers, or block content. Try to hold yourself back from making entire sections of your website inverted.