Color contrast is important for showing links in text if you don’t want to underline the link text. You need a 4.5:1 contrast between the link and background and a 3:1 contrast between the link and surrounding text. There is a plugin called Access Monitor that you can use to schedule accessibility tests for your site.
There are a lot of considerations for accessibility that I am sure that our site does not meet. For example, I am sure that not all of out images have alt text. Nor do our videos have transcripts. The way that our sliders for posts and SELCOtv work I am pretty sure that they would not be screen reader friendly either.