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Color blindness

commandcenter.blogspot.com

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Re: Color blindness

#151

Post by santelli »

Fnoord wrote: post #96
BrandoElFollito wrote: post #52

Earlier quoted context omitted.

I was flashing a router which seemed broken. Each flashing was failing. Then my brother came by and asked me if I was trying to trigger a failed flash? WTF? As you now guessed I was seeing these little motherfucker LEDs as red when they were green. I hate them with passion. And I work in IT, they are everywhere. I sent a few days ago a picture of my home fibre converter to my wife when she was out with friends so tha…

Do you reckon AR glasses fix this issue?

There are normal glasses to fix it. I tried once and it seemed plausible, though I wanted contact lenses, and that wasn't an option back then. So there are 3 different photoreceptor cells in your retina, each responsible for one of RGB. Many "colorblind" people actually have just a lower numbers in one of the receptors and the more present receptors distort colors, like if you try to mix a color from RGB paint but don't have enough from one of the ingredients. These glasses correct the distortion. Though they can not change color perception for people whose deficiency is caused by a complete absence of one of the photoreceptors.

Re: Color blindness

#152

Post by ZephyrBlu »

jedimastert wrote: post #123
kabdib wrote: post #8

I'm r/g colorblind, and suddenly the indistinguishability of small colored objects makes sense now. Wow. Okay then. I hate multicolor LEDs with a passion. Those little amber or green dots look identical to me, even when you put them side by side. I use a phone app that uses the camera and shows me RGB values at a reticule. I've gone through rack and racks of equipment with that app, looking for things like dead drive…

Just to clarify (for my own edification) If you look at the colors #FF0000 (red) and #00FF00 (green) does one look greyish or do they both look like the same color? Also, apparently this is news to many r/g color-challenged people: peanut butter doesn't look green to every one else. It looks brown (which I don't know if a separate color to you)

It seems that there are many shades (Pardon the pun) of colour blindness.

I'm R/G colour blind, but I can still see red and green. I have issues when red and green are close to one another or blended though.

It becomes impossible for me to distinguish between what is red and what is green, or where the colours start and end.

Re: Color blindness

#153

Post by Fnoord »

bobthepanda wrote: post #125
Fnoord wrote: post #96

Earlier quoted context omitted.

Do you reckon AR glasses fix this issue?

Ideally, colorblind people wouldn't have to deal with solely color LEDs as a signal in the first place. I'd like to not spend money on assistive devices if I don't have to.

We live in a world where being an exception means a disadvantage. Changing some factors is difficult. For example, green means good and red means bad. That is not going to change.

My partner is left handed and she has to constantly adapt to a right handed world. Sure, you can buy products catered to both. If you buy for left hand then I can't use as right handed person. The sum is left handed people live, on average, shorter and are due to their giftedness better versed in right hand than right handed people are with left hand.

We both have autism, in an ideal world we never have to adapt, but that ideal world is simply unrealistic.

Now, my question is can AR solve this? I didn't include that I believe AR devices, including glasses, can become a norm ie. this would not be the sole reason you would use AR for.

Re: Color blindness

#155

Post by loeg »

saagarjha wrote: post #141
loeg wrote: post #28

Earlier quoted context omitted.

Anecdotal, but I have mild color-blindness and love syntax highlighting.

I do as well. At best it helps, at worst…it’s just not useful? There’s no harm to leaving it on, unless of course the color scheme is garbage and I can’t tell the text from the background.

Exactly. And some colorschemes work better for me than others, which I guess is probably true for everyone, regardless of (partial) colorblindness.

Re: Color blindness

#156

Post by mpetroff »

II2II wrote: post #114
loeg wrote: post #27

I've got mild red-green colorblindness (less severe than the author's); this article is great, and goes into much more detail than I knew beforehand. If I could add some suggestions to the author's at the end: * First, if you have the option of using one or the other, do so. Like, you can use red, blue, yellow, purple, and black for lines on a graph before you even need to find an additional color like green. * Secon…

To add to your suggestions: avoid referring to colors on a chart by name. While it may be able to identify the difference between two colors (e.g. by intensity), it may not be possible to identify the color. In my case, identifying blue and purple are frequently difficult. Presumably this is because purple is a mixture of blue and red.

The issue isn't with referring to colors on a chart by name but with using a color name as the sole identifier. Referring to parts of a chart by color is fine, and provides additional information, as long as a line style or shape identifier is also used, e.g., the "blue solid line" and the "orange dashed line" in the case of a line plot or the "blue circles" and the "orange squares" in the case of a scatter plot. Ideally, I think color swatches should also be included when referring to colors, so it isn't necessary to match the name to the color [1].

[1] https://mpetroff.net/2019/11/figure-caption-color-indicators...

Re: Color blindness

#157

Post by II2II »

mpetroff wrote: post #156
II2II wrote: post #114

Earlier quoted context omitted.

To add to your suggestions: avoid referring to colors on a chart by name. While it may be able to identify the difference between two colors (e.g. by intensity), it may not be possible to identify the color. In my case, identifying blue and purple are frequently difficult. Presumably this is because purple is a mixture of blue and red.

The issue isn't with referring to colors on a chart by name but with using a color name as the sole identifier. Referring to parts of a chart by color is fine, and provides additional information, as long as a line style or shape identifier is also used, e.g., the "blue solid line" and the "orange dashed line" in the case of a line plot or the "blue circles" and the "orange squares" in the case of a scatter plot. Ide…

Yes, using multiple identifiers would work as well.

The use of colour swatches is interesting, though I would add that it should use a standard palette of colours to ensure that there is also differentiation based upon intensity (which would also help in the grey scale printout example).

Re: Color blindness

#158

Post by bobthepanda »

Fnoord wrote: post #153
bobthepanda wrote: post #125

Earlier quoted context omitted.

Ideally, colorblind people wouldn't have to deal with solely color LEDs as a signal in the first place. I'd like to not spend money on assistive devices if I don't have to.

We live in a world where being an exception means a disadvantage. Changing some factors is difficult. For example, green means good and red means bad. That is not going to change. My partner is left handed and she has to constantly adapt to a right handed world. Sure, you can buy products catered to both. If you buy for left hand then I can't use as right handed person. The sum is left handed people live, on average,…

Adaptation is unrealistic in cases where adaptation costs a lot of money or creates other maladaptations. The world's adaptation that needs to be done for colorblindness is simply not making color the only differentiator between states. And if you have to do so, using one of the many free, publicly available sources to choose a palette that is colorblind-friendly.

For example, in a traffic light, both color and position are status differentiators; the top light is stop and the bottom light is go. Many buttons are both colored and have symbols/shapes on them associated with the color. Even using entirely different senses are helpful; crosswalk signals near me use color, position, shape, and audio, the last because blind people can't see color or shape.

Color in general is just not a great sole associator, even for fully sighted people, because perception of color can change depending on environmental conditions, and because meaning of color is not standard across cultures.

Re: Color blindness

#159

Post by bobthepanda »

withdavidli wrote: post #147
Khaine wrote: post #142

Earlier quoted context omitted.

I think the point is devices should be designed to be usable by colourblind people, without having to buy an additional device. Can you imagine telling someone a wheelchair, that should just buy a portable crane to get into buildings that uses stairs?

That would be great, but reality is that product development at many places depends on a few people to be aware of accessibility in the design process. And there are situations outside of product usability it will be helpful to know what is commonly seen. For example, when someone asks you to pick up X item at a store that is a color that you have a hard time identifying.

Really we should just make colorblindness part of the ADA and then companies have to solve that liability appropriately.

Re: Color blindness

#160

Post by alkank »

GordonS wrote: post #66
kabdib wrote: post #8

I'm r/g colorblind, and suddenly the indistinguishability of small colored objects makes sense now. Wow. Okay then. I hate multicolor LEDs with a passion. Those little amber or green dots look identical to me, even when you put them side by side. I use a phone app that uses the camera and shows me RGB values at a reticule. I've gone through rack and racks of equipment with that app, looking for things like dead drive…

I'm also Red-green colourblind, and also use a mobile app to check RGB values of things! I also use a Windows traybar app that I wrote with Delphi about 15 years ago, which gives me a dropper I can use anywhere in the screen to see RGB values. I've also noticed that it's much more difficult to differentiate tones and colours of small objects. Cues were mentioned in the article, and I think I subconsciously rely on th…

You need to pass a color-blindness test to get a driving license in my home country and I can't tell you how much I struggled with it 15 years ago. The reason is exactly this -- I can work out traffic lights very easily although I'm r/g colorblind, however the test was about showing a number of different colors and asking you to name them. I failed, obviously, but the instructor did a favor and marked me as passed.

I still have no idea what practicality that test provides in driving.

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