While giving your website a unique design is great, when it comes to usability, doing what everyone else is doing sometimes is best. Follow conventions, because when people visit a new website, the first place they look for things are in the places where they found them on most other websites; they tap into their experience to make sense of this new content. This is known as usage patterns. People expect certain things to be the same, such as link colors, the location of the website’s logo, the behavior of tabbed navigation and so on. Don’t make it hard to find your content.
Google keeps all links on its websites blue for a reason: the color is familiar to most users, which makes it easy to locate.
What color should your links be? The first consideration is contrast: links have to be dark (or light) enough to contrast with the background color. Secondly, they should stand out from the color of the rest of the text; so, no black links with black text. And finally, research shows (Van Schaik and Ling) that if usability if your priority, sticking to blue for links is best. The browser’s default link color is blue, so people expect it. Choosing a different color is by no means a problem, but it may affect the speed with which users find it.