accessibility

The Verge
In design, both in the digital and physical worlds, color should never be the sole indicator of meaning. A simple test: if your work was converted to grayscale, would it still be usable?
Andy Baio talks about being colorblind and encourages empathy in the design process.
shkspr.mobi
"Are you developing public services? Or a system that people might access when they’re in desperate need of help? Plain HTML works."
Good reminder that web design can fail without accessibility.
YouTube
Nice explanation of why CSS is different from other types of programming. It's a positive feature of the Web that we don't have the same control as the printed page. (I keep telling myself.)