Colour blindness simulator
Take or choose a photo and see it the way a person with a protan, deutan or tritan deficiency sees it, at the severity you choose.
Filter settings
Drag an image here or paste it (Ctrl/Cmd+V)
Try it with your own photo
Drag an image here or paste it (Ctrl/Cmd+V)
The filter uses the physiological model by Machado, Oliveira and Fernandes (2009), applied in linear RGB. A person with normal vision looking at the filtered part sees roughly what you see.
Save and share
Save the filtered image
Prepare the image, then press and hold it (phone) or right-click → “Save image”. You can also copy it to the clipboard.
Share your profile
Anyone who opens this link sees the simulator already set to your profile and can upload their own photos.
Filter for websites
The same filter as SVG and CSS: paste it into a page to show images and video the way you see them.