The Accessible Perceptual Contrast Algorithm (APCA) is the candidate contrast method for WCAG 3. A proposed successor to WCAG 2.x contrast guidelines.

The following list is a series of tools and resources for designing with APCA in mind.

Tools

• APCA Contrast Calculator by Myndex Research
• APCA Accessible Colour Contrast Checker by Achecks
• Color Contrast Tool by Shimanta
• Colour Contrast Tool by C. Liam Brown

Note: At some point I intend to order these tools by preference. At the moment I’ve been using the Myndex Research one, just because it ranks highest in search… 🤷

Resources

• The Easy Intro to the APCA Contrast Method by Myndex Research
• The Realities And Myths Of Contrast And Color by Andrew Somers

Managed to rescue some of the old breeze blocks from a wall that’s being demolished while our house is getting reno’d