Encouraging sites to design for the 15% of potential users is hard, but “Stop Designing For 85% of Users” provides excellent explanations and encouragement, though it tends focus on visual impairments.
As designers, we like to think we are solution-based. But whereas we wouldn’t hesitate to call out a museum made inaccessible by a lack of wheelchair ramps, many of us still remain somewhat oblivious to flaws in our user interfaces.
While important for all websites, this article is not an option for entities that work directly in the areas of disability. Unfortunately these same web sites and their associated business processes are weak on the application of Universal Design principles and too frequently deny users any meaningful interaction process—many times they just deliver paper-based forms.
An example of the article’s explanation on the difference between light and dark colors with the impact on contrast