Here's a tie-dye shirt (on the left) and how it looks to me (on the right). I can't tell the two images apart, but my wife was glad to explain to me how "wrong" I am.
I don't know the answer to your question, but I know the second and third images aren't the same because I can tell them apart.
#1 looks "rosy", #2 medium, and #3 "pale".What differences pop the most to your eye? To me, the first shot is the most dramatically different, while the 2nd and 3rd are only just.
#1 looks "rosy", #2 medium, and #3 "pale".
But what I mean by "rosy" is really "darker", not "redder".
I've learned what others call a certain color, and that strongly influences how I express what I see, even though I'm not seeing the same thing. If somebody has been working out and their face is flushed, I may not notice. If I do, I'll think their skin is simply darker, but I'll say "your cheeks are red" since that's what others say about it.
There's an orange-red tint to the Jobs on the right, but it's very subtle. Almost like you're looking at a black and white image with a slight color overlay.
#1 looks "rosy", #2 medium, and #3 "pale".
But what I mean by "rosy" is really "darker", not "redder".
I've learned what others call a certain color, and that strongly influences how I express what I see, even though I'm not seeing the same thing. If somebody has been working out and their face is flushed, I may not notice. If I do, I'll think their skin is simply darker, but I'll say "your cheeks are red" since that's what others say about it.
^^^
This is why traffic lights are arranged the same way in every country worldwide.
red
yellow
green
I believe positioning of lights plays a role in relation to all of that.that's interesting... so if u'r color blind, i guess u wouldn't be driving either, otherwise u would be going through more red lights, unless u just see all traffic stopped, so u just assume it must be red. Providing there *is* traffic that is.
… lack of contrast …
When they say "Sorry, you cannot view this page" it's true literally!https://forums.macrumors.com/posts/21458816 consider the second screen shot, an example that Apple sets to developers. It's almost laughable.
A reverse color blindness test image
The book Puzzillusions by Archimedes' Laboratory contains this image:
People who are red-deficient color blind (like me) should see something in the image quite clearly, while people with normal vision should see nothing but random dots, or struggle to see what the color blind see.
The image works as they claim on most of the people I've tested so far:
me: I see it.
another red-deficient color blind man: he saw it.
1 girl with normal color vision: she saw nothing.
2 men with normal color vision: they saw nothing.
1 man with normal color vision: he said it was a little hard to recognize but he could see it.
4 women with normal color vision: they saw nothing.
It doesn't work the same way for green-deficient color blind people. They should see a messy area that's not really identifiable.
When you can't tell, use an educated guess
When I saw the Google logo in a MacRumors news story yesterday, it occurred to me that I don't know what colors are in the logo.
…
Conclusion: blue red yellow purple green brown
How close did I get?
I posted that story a few years ago. Here's a new story that presents the flip side:We buy sliced bread from the market or bakery. When I'm making myself a sandwich and a loaf isn't newly purchased, I wonder if the bread is still good. Once in a while a loaf stays past its welcome and grows moldy, but I often can't tell. If the bread has white spots, I can tell and out it goes. But if the bread is turning green, to me it's just the same tannish color that bread normally is. If somebody else is around, I'll ask for a bread inspection. If not, I proceed and cross my fingers. I've probably poisoned myself on occasion.
A reverse color blindness test image
The book Puzzillusions by Archimedes' Laboratory contains this image:
View attachment 687060
Copyright © 1992-2015, Gianni A. Sarcone, Archimedes-Lab.org. Used with permission
People who are red-deficient color blind (like me) should see something in the image quite clearly, while people with normal vision should see nothing but random dots, or struggle to see what the color blind see.
The image works as they claim on most of the people I've tested so far:
me: I see it.
another red-deficient color blind man: he saw it.
1 girl with normal color vision: she saw nothing.
2 men with normal color vision: they saw nothing.
1 man with normal color vision: he said it was a little hard to recognize but he could see it.
4 women with normal color vision: they saw nothing.
It doesn't work the same way for green-deficient color blind people. They should see a messy area that's not really identifiable.
I haven't read through all of this thread, just the first page and last page - I will try to catch up the middle over the next few days. But, my son is color-blind, as well as my brother. Obviously my mother and I are carriers of the genes. I believe she and I also fall into the population of women who see more than the normal color spectrum, although I don't know how you would test this. My maternal grandfather was also colorblind. There is no colorblindess on my husband's side of the family.
My son is 9 and learned in preschool how to read the color names of the crayons, so he fooled his teachers for quite a long while. Most of his friends are more than willing to help out in school if there is a project that requires specific colors and the markers are unnamed. Sometimes it really frustrates him and it makes me sad as I know I passed it on to him (and see a zillion extra colors). As you said in your OP, it's not a life threatening issue, but for someone who enjoys color so much (I am also a photographer and struggle with making photos B&W because to me it sucks all the fun out of them), it's heartbreaking to know my child only sees a tiny fraction of the world.
Fascinating; I wonder whether there is a link between women who fall into the part of the population who can see more than the normal colour spectrum and the gene for colour blindness.
If you're asking me, I see big letters "NO" as clear as anything. I've also shown the image upside-down to people. They see nothing special and I see the letters "ON".I see groups of like colored dots (light-dark green, light-dark orange/red, light-dark browns), but no letters or numbers. What do you see in this image?
If you're asking me, I see big letters "NO" as clear as anything. I've also shown the image upside-down to people. They see nothing special and I see the letters "ON".
Bread and peanut butter
--- Peanut butter ---
It's funny how often I've assumed something was a certain color and learned very much later that I was wrong. The funniest of all is the color of peanut butter. Peanut butter is the shade of brown that looks just like green to me. As a kid, my brother (he's color blind too) and I called that color "peanut butter green". Apparently we said that to each other but never happened to say it in front of anyone with normal color vision, because I was an adult before somebody told me peanut butter is brown. The "don't ask, don't tell" rule isn't a good one for the chroma impaired!
It sounds like your son has a classic case of red color deficiency, like me. Which means he can "see" pink, but it's another name for gray.He has trouble mostly with orange/green/brown...
He mixes purple and blue...
He can't see pink...
He thought peanut butter was green...
He could not see green crayon on a light brown bag...