Who Can Use - WhoCanUse is a tool that brings attention and understanding to how color contrast can affect different people with visual impairments.
Cron Color - Free web tool for designing color palettes and checking contrasts.
Palette For Mac - A menu bar based colour contrast analyser
Kontrast - Check and adjust web element contrast in real time.
Koa11y - Automatically detect accessibility (a11y) issues on webpages
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.