Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Why are links blue in the main site, but orange in Meta? Was there a contrast issue? I wouldn't know, simply because I am a relatively new user.
Meta uses a different .css style sheet to the main site, to make it easier to differentiate between them. This affects the colour of pretty much everything, including links.