Color differences

This might be a pretty basic questions, but I haven’t found an answer:

  • I saved a photoshop JPG with a brown color…
  • Opened Dreamweaver and imported it into a simple HTML document…
  • Set the HTML document background to the same exact color (#whatevernumber) as the one used in the JPG.

On my comp it looks fine… on some other ones they look like two different tons of brown. Is it just the video and color quality settings on each computer (but how would that change anything since they are both the same colors)??

(-: Thanks.