Usually, my side bar careers block is orange, but on some occurrence it's blue ! Is stack exchange proceeding to a-b testing to see which color is the best ? Is it random ? Is it based on some condition I couldn't find ? :D

This out of pure curiosity, I'm just wondering.


1 Answer 1


Yes, like many sites we sometimes conduct A/B tests like this. Right now, on Stack Overflow, some people will indeed see an orange version of the Careers ad in the sidebar, and other people will see a blue version.

  • 1
    Curious to know how you can know which is better? You monitor clicks in orange vs. blue colors? Commented Apr 25, 2014 at 11:11
  • 1
    I also see grey from time to time. I think I am A/B/C tested ;)
    – Szymon
    Commented May 6, 2014 at 13:06
  • 1
    Does the color matter if I'm not looking for a job?
    – Jason C
    Commented Jul 19, 2014 at 1:01

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