Perceived brightness: an essential concept for UI design
Look at the image above. Don’t you feel some colors are brighter than others? For example, between the yellow and blue: which is brighter?
Useful Sections for a Design System Reference Site
Accessibility and web performance are not features, they’re the baseline
UX Optimizations For Keyboard-Only And Assistive Technology Users — Smashing Magazine
It's 2019! Let's End The Debate On Icon Fonts vs SVG Icons
Barrierefreiheit auch für dynamische Seiten – mit HTML5 und ARIA