Explore the intersection of medieval heraldry and modern web accessibility in this 22-minute conference talk from JSConf EU 2019. Discover how centuries-old design principles from coats of arms can inform and enhance contemporary JavaScript development practices for creating more inclusive digital experiences. Learn about the top 10 accessibility practices, color contrast techniques, and the importance of simplicity in design. Examine the structure, symbolism, and international standards of heraldic designs, drawing parallels to web accessibility guidelines. Gain insights into how historical design concepts can be applied to improve usability for visually and motor-impaired users in today's digital landscape.