Trying to navigate and use a website without looking at it sounds like a drunk challenge that you might do at a party or something you'd do to win a bet, but for many users of the Internet, this is their reality with not being able to visually see the screen they're in front of or only partially seeing what there is.
So here is a challenge for you, test your website and see what the experience is like for a person that would be using assistive technology to navigate and consume your content and see just how well it is designed and created to help users navigate and use your website.
Get a Screen Reader
If you're a Windows users, my tool of choice is NVDA. It is open source, free to use and build by two Australian developers who themselves are visually impaired. You can donate to their project to help the development and help many other users around the world that can't afford the more expensive screen readers that are available.