Can I use figures from my article on my website after it is accepted but before being published, if I publish open access and retain the copyright? I have a paper that was just accepted (but not yet published) in an open access journal. I am also upgrading my website right now, and I would like to know if I am allowed to post pictures which are in the paper (which I made) on my own personal website. I know that by publishing in a journal, I am giving up some rights over the material to the journal itself, and that certain actions are grounds for the journal to remit the article such as trying to submit the paper to another journal. 

Can I use the pictures on my website, now before the paper has been published? 
Do I have to wait until after the paper is published to use them?
Are the rules different for journals that are not open access?

I found the license information:


  Ownership of the copyright in the Contribution remains with the Author(s).
  However, the Author(s)’ re-use rights in the Contribution are subject to the rights and restrictions set forth below in this Section, and in clause 3 and 4(a). After the Author(s) have submitted the Contribution to NPG hereunder, the Author(s)’ rights to re-use the Contribution shall be the same as those set forth in the Creative Commons licence selected above, with the following additional re-use rights:
  
  (a) to reproduce the Contribution in whole or in part in any printed volume (book or thesis) of which they are the Author(s); and
  
  (b) to reuse figures or tables created by the Author(s) and contained in the Contribution in oral presentations and other works created by them.
  
  Notwithstanding, if the entire Contribution is rejected by NPG and not published, all rights under this licence shall revert to the Author(s).
(b) reuse figures [...] created by the Author(s) and contained in the Contribution in [...] other works created by them.


does IMHO cover your pictures. 

However, depending on you legislation you may need to get approval (legally speaking: a license) by your coauthors.  


IIRC in the US each coauthor can excercise the copyright independent of the other coauthors (please correct me if I'm wrong) 
but e.g. in Germany all coauthors hold the copyright together, and must act together. 


I guess that already single figures are works of their own and thus may only have a subset of the paper's coauthors as authors (but IANAL). But IMHO figures in scientific papers still frequently have multiple coauthors: in analogy to what constitutes authorship for a paper, I'd say that everyone who had an important contribution to the figure is coauthor of the figure.  

Examples:  


A suggests that a hexbinplot is more appropriate than the current pseudo-3d scatter plot. B accordingly changes the figure => I'd say both A and B are coauthors of the final figure. 
A result plot showing a model and the experimental data: experimental design &amp; measurements by A, theoretical bounds for models by B, and modeling of the experimental data &amp; plotting of all into one figure by C => IMHO makes 3 coauthors.


Note: things may be even more complicated as e.g. in Germany the right for secondary publication according to §38 UrhG refers to the authors, while the commercial rights are typically with the employer.  

Practically speaking I guess it is easiest to ask all coauthors of the paper (and if relevant your employer) for permission to re-use the paper or parts of it on the web site. I'd anyways consider piecemeal asking of some coauthors every time you want to put another figure on your blog as impolite.