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Color Vision Simulation

developer.mozilla.org

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Re: Color Vision Simulation

#31

Post by quitit »

kingcharles wrote: post #17
waynecochran wrote: post #3

It is always interesting for me, as someone who is colorblind (Protanopia), to see these. I always have to call my wife in and ask if the images look different. She is always amazed that I can't tell the difference. The original image and the Protanopia image are exactly the same to me. The Deuteranopi looks very slightly different -- if I really stare at it. The other do indeed look different.

> The original image and the Protanopia image are exactly the same to me. What's even more fascinating is that, while these two images are very different to me, what you are actually seeing might be totally different to what I am seeing in the Protanopia image and we won't know.

Qualia have entered the chat.

Re: Color Vision Simulation

#32

Post by quitit »

asicsp wrote: post #18
Perenti wrote: post #13

This tool deals with total colour loss, but does not allow for things like deuteranomaly which is far more common than Deuteranopia. Include a slider to simulate reduction in cones. As someone with deuteranomaly it's amazing how many interfaces just don't quite work.

Seems like it used to be available before: > Firefox 81 removed unnecessary simulations for protanomaly, deuteranomaly, and tritanomaly, and added a simulation for achromatopsia (no color).

I believe this is a reasonable change because there aren’t situations where accessibility would only want to partly solve the colour blindness issue. This is demonstrated by the way many readers with colour-blindness are still able to still see differences in the demonstration imagery.

The real issue is using a colour photo like the one used in the article because this doesn’t demonstrate the effect of low contrast - a demonstration of lost contrast is much better with bodies of text against problematic background colours, since there is an immediately obvious reduction in legibility, rather than a bit of flourish in a photo.

Re: Color Vision Simulation

#33

Post by thedougd »

artdigital wrote: post #8
timebomb0 wrote: post #4

Earlier quoted context omitted.

This is really interesting to hear. I am also red-green colorblind (Protanopia) but the difference between the normal and Protanopia images here is very noticeable to me. I can see that red is missing in the Protanopia version. I definitely have trouble with many shades of some colors, especially if the colors are really small on the screen. So many Protanopia colorblind filters in games and apps mess up the colors w…

I feel the same. I am clearly red-green colorblind and I can't pass these tests with a lot of circles in different colors, but all the images from this list look very distinctive to me. I also can't use the red-green colormodes in slack, iOS, mac, etc. because it makes the colors too... weird. I often wonder if it's because the colors that I see, grew up with and label as "red" and "green" are actually different to w…

Exactly my experience. I can see red and I can see green, I just struggle to identify the difference in small steps of red to green. Kind of the opposite of how people with tetrachromacy can see more yellows. Normal people can see yellows just fine, they can't differentiate them as well.

I think these computer compensation controls should be sliders.

Re: Color Vision Simulation

#34

Post by goohle »

goldenkey wrote: post #9
gorgoiler wrote: post #7

Let us hope this useful developer tool survives longer than some other parts of Firefox that were critical to my workflow: RIP, 3D DOM View (2012 — 2016) https://developer.mozilla.org/en-US/docs/Tools/3D_View

I'm sure you can do 3D DOM View as an extension with CSS transforms. It sucks they removed it but it wouldn't be terribly hard to implement in a day or two as a WebExtension/bookmarklet.

Add this rule to CSS on the page in Firefox built-in CSS editor:

     * { outline: 3px outset gray; }

Re: Color Vision Simulation

#35

Post by nickloewen »

This is excellent! I have also found Sim Daltonism very helpful for testing out designs. They have a mac app that can add a colourblindness-simulating filter over an area of the screen, and an iOS app that can do the same with a live feed from the camera: https://michelf.ca/projects/sim-daltonism/
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