Apart from this blog, I also told some other things that might be interesting for you. Here are the resources that are in English. See the French version of this page to have all resources.
I wrote a series of articles on text colour contrasts that have been translated into English:
- Text Colour contrasts (Part 1): who is it for and what are the accessibility rules?, on Tanaguru’s blog, July 19, 2019;
- Text Colour contrasts (Part 2): How to choose the right colour combinations for my website?, on Tanaguru’s blog, July 25, 2019;
- Text Colour contrasts (Part 3): the contrast improvement mechanism, on Tanaguru’s blog, March 9, 2020.
I did a short intervention for a podcast episode about focus outline: Default focus outlines: Don’t remove them! (archive), on A11y Rules podcast, published on September 17, 2021.