Yes, your site too can (and should) be accessible
Talk from JS Conf 2017 by Laura Carvajal on how she and her team incorporated accessibility as a core part of their process.
WP Theme Auditor
Accessibility auditing tools for WordPress themes.
Color Review
Online tool for checking color contrast in designs
The A11y Project
The Accessibility Project wants to help make accessibility easier to implement on the web through short, digestible content pieces kept up to date.
A11y Weekly
Weekly web accessibility news delivered every Monday by David A. Kennedy.
Design for Real Life
by Eric Meyer and Sara Wachter-Boettcher. By identifying stress cases and designing with compassion, you’ll create experiences that support more of your users, more of the time.
Color Accessibility Workflows
by Geri Coady. We often design with only one type of color vision in mind – our own. Make sure that accessibility and aesthetics go hand in hand with every design you create.
Accessibility for Everyone
by Laura Kalbag. This book guides you through the accessibility landscape: understand disability and impairment challenges; get a handle on important laws and guidelines; and learn how to plan for, evaluate, and test accessible design.
Disability, Human Rights, and Information Technology
by Jonathan Lazar and Michael Ashley Stein. This book addresses the global issue of equal access to information and communications technology by persons with disabilities. The right to access the same digital content at the same time and at the same cost as people without disabilities is implicit in several human rights instruments.
Inclusive Design Patterns: Coding Accessibility Into Web Design
by Heydon Pickering. This book explains how we can craft accessible interfaces without extra effort and what front-end design patterns we can use to create inclusive experiences.