I was wondering what research I can find on what colors to use for primary 'call-to-action' buttons. I know the size of the button and the contrast it has in relation to its background play a big part. I see blue and orange used a lot, but im wondering where I can find more information on this that will help determine the color of the primary buttons in a site design...
Good question! I'm dealing with this issue myself with submit, cancel, and exit buttons on a page.
Here is a link for the visual weight of primary and secondary buttons.
Here is another with a longer list at the bottom.
Here is a link that addresses colors specifically, although it only lists 5.Tweet