Need advice on visually distinguishing characteristics of hyperlinks

Hi,

Need advice on a situation that, frankly, I haven't run into before and am having trouble interpreting WCAG 2.0 success criteria.

I'm comparing two separate pages on a customer website: within the text content, there are hyperlinks which do not have a separate color from the surrounding text. All the text is black. The hyperlinks are not underlined: on one page, they are in bold text (and there is also bold text that is not hyperlinked on that page); on the second page, the hyperlinks are italicized, and resemble book titles.

The links change color and gain an underline on mouse-over; they gain an underline when the page is tabbed through.

Does the situation described above contradict any of the Success Criteria? I'm having trouble determining. They don't seem to directly violate either 1.3.3 Sensory Characteristics or 1.4.1 Use of Color; I'm not sure which other SC might count.

Thanks,

Andy Keyworth