Actions To Take
First, I recommend a mind-shift: You don’t want to alienate 20% of your potential customers, right? If your personal values are to be all-inclusive and fair to everyone, then it’s time to look at what parts of your business don’t meet that value…and that includes your website.
The Website Audit
Second, there are myriad companies happy to run a quick (or long) scan of your site to analyze accessibility issues. These can run into many $1,000s to diagnose and resolve. Some web development companies specialize in this work. (I do not. But I can advise.)
There are no black and white rules for ensuring your site is fully compliant or not. (There are myriad details about whether or not the shade of blue you use for text contrasts sufficiently to meet guidelines against the background.)
The web remains largely the “wild west” with few regulations, some guidelines, and most website owners left to their own devices to define what it means to meet the needs of their site visitors. Start defining those needs!
Get Professional Advice
Seek out professional advice to ensure you’re fully informed of your potential risk. Begin with your insurance provider. Do you have coverage for website accessibility/disability? Depending upon what you learn from your insurance provider, you may wish to consult an attorney about your level of risk.