User Experience Stack Exchange is a question and answer site for user experience researchers and experts. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

This question already has an answer here:

On the pages of many modern web services (including stackexchange webpages), there is a black header. What is the psychological effect of this? Is there any significance of it being black? Is there an optimal width for this header?

share|improve this question

marked as duplicate by adrianh, Evil Closet Monkey, Code Maverick, Benny Skogberg, JonW Mar 29 '14 at 20:07

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

up vote 1 down vote accepted

I think it will largely depend on the context of which it is apart of. StackExchange and Google (although Google has changed recently) both use a ~35px-height top header, but they also both have other web applications of interest. As well, they have profiles that encompass many of their web applications. I believe this is their method for keeping those applications/sites available throughout multiple applications. I'm fairly certain the black is to differentiate it from the actual site/app, but that may be only one of the reasons.

As for optimal width I would say it should span the full page (100%).

share|improve this answer
By width, I meant vertically (what you referred to as the height). – sawa Mar 29 '14 at 12:51
That's what I was thinking actually. I don't know how effective 35px would be. If you look at yahoo they use a 22px height bar. That's pretty small but it seems that it is still effective. – Tbolt Mar 29 '14 at 12:52

Not the answer you're looking for? Browse other questions tagged or ask your own question.