Is there an accessibility guideline for the contrast of a button color between a normal state and hover state?

I'm a designer with a typical, basic understanding of accessibility.

My question is that is there an accessibility rule for the color contrast of a button that is in a normal state vs when it is in a hover state? I've tried looking for it but I'm having no luck. I'm using material design, however, the color of each state does not seem to have enough contrast between each other.