Colour blindness image checker

This colour vision checker lets you upload a photo and explore how it might look for people with different types of colour vision. It is a simple way to notice shifts in contrast and understand where your visuals might be harder to read.You care about accessibility and user experience, you want to do better, but you're not sure where to start or you just need an extra set of hands to make it happen. That's where I come in.

Design is for everyone, and colour plays a big part in how people take in information. For some, reds and greens blend. For others, blues drop away. This tool helps you see those changes for yourself so you can make clearer, more intentional choices in your work.

While this is not a perfect representation of every person’s unique vision, it does follow respected research models and will give you a strong sense of how your colours are performing.

These colour vision transformations are based on the work of Gustavo M. Machado, Manuel M. Oliveira and Leandro A. F. Fernandes. Their study helps make these previews possible.

Open 'A Physiologically-based Model for Simulation of Color Vision Deficiency' research paper