Accessibility is a pillar of great design - it shouldn’t be an afterthought, whether you’re making a poster, a video, a magazine or a website. When you use a clear, legible typeface, you make it much easier for people to understand and engage with your content.
This doesn’t mean your type choices stop being clever or interesting; nor does it mean you have to spend a lot of money to follow the rules, because there are loads of free sans serif fonts and free fonts for designers that happen to be accessible. You’ve probably used a few of them in projects without realising.
