Colour blindness simulator

Question

Like any responsible developer, I\'d like to make sure that the sites I produce are accessible to the widest possible audience, and that includes the significant fraction of

Answer 1

Color Oracle is great, but another option is KMag, which is part of KDE in Linux. It's ostensibly a screen magnifier, but can simulate protanopia, deuteranopia, tritanopia and achromatopsia.

It differs from Color Oracle by requiring an additional window in which to display the re-coloured image, but an advantage is that one can modify the underlying image at the same time as previewing the simulation.

Here is a screenshot showing the original figure on the left, and the KMag window on the right, simulating protanopia.