The old thread died and nobody bumped it when I asked; follow along in this Imgur album if you like: http://imgur.com/a/7ZIaH

I recently made this image...

It contains the focal colors, as far as I can tell (i.e., lots of Wikipedia reading for each color name along with eyeballing the color samples in each article), for the 12 basic color terms that Italian, Russian, and Greek have, or alternatively the 11 basic English color terms plus azure: pink, yellow, white, azure, red, orange, green, grey, purple, brown, black, and blue.

I arranged them in rows corresponding to luma ("bright" colors at the top, "dark" colors at the bottom) and in columns corresponding as well as possible to the four psychological primaries (red, yellow, green, and blue).


I then found this colorblindness simulator for Paint.NET: http://paint.net.amihotornot.com.au/Features/Effects/Plugins/Adjustments/Colorblind_Simulation/
However, I didn't like the lack of a "yellow-blue" colorblindness simulation, so then I found Vischeck (available on the Web or as a plugin for Photoshop or ImageJ) and went to work: http://www.vischeck.com/vischeck/

This is what the image above might look like to someone with deuteranopia, the most common form of red-green colorblindness, characterized by the lack of the mid-wavelength (or "green") cones...


This is what the image at the top might look like to someone with protanopia, another form of red-green colorblindness, characterized by the lack of the long-wavelength (or "red") cones...


This is what the image above might look like to someone with tritanopia, or yellow-blue colorblindness, characterized by the lack of the short-wavelength (or "blue") cones...

I would have chosen green as the "second color" rather than blue in the simulation but whatev

Finally, this is what the image above might look like to someone who is monochromatic...

Of course, it will slightly differ based on whether it's "rod" or "cone" monochromacy, or which cone remains if the latter; for example, someone with only the short-wavelength cone would see the left side of the top image as darker than this simulation.
Also, I chose the grey I did based on gamma correction, to appear as close as possible to halfway between white and black (187, or #BBBBBB): http://filmicgames.com/archives/299
The reason that the brightness of the RGB components is not linear in the RGB values is that people are better at distinguishing among low levels of light than among the higher levels, and the designers of sRGB and similar standards wanted to achieve the highest perceptual range of colors for a given representation.


BTW this is the old thread, full of informative personal stories: http://thewolfweb.com/message_topic.aspx?topic=623652

1/4/2013 12:45:35 PM

k

1/4/2013 12:56:33 PM

1/4/2013 12:56:38 PM

klrblindkid1 pls

1/4/2013 1:44:04 PM

Did you ask in the "ask a premie" thread?
message_topic.aspx?topic=593789&page=15

I don't know about "full of informative personal stories," but I bumped the old one for you.

1/4/2013 1:46:45 PM

I did, right here: http://thewolfweb.com/message_topic.aspx?topic=593789&page=14#15561223

1/4/2013 2:21:05 PM

is this what you were up so late doing that you couldn't go to work this morning?

1/4/2013 2:48:45 PM

kirby, pls respond

1/4/2013 2:57:08 PM

They all look grey to me.

1/4/2013 4:13:40 PM

Man my dad must think state has the ugliest uniforms ever.. It'd be cool if just for a while he could see what things really look like

1/4/2013 6:00:06 PM

Quote :

"I did, right here: http://thewolfweb.com/message_topic.aspx?topic=593789&page=14#15561223"

Ok, in October

1/4/2013 11:53:59 PM

Quote :

"klrblindkid1 pls"

definitely came in to say something about her :3

1/5/2013 4:36:06 AM

Without experiencing someone else's consciousness directly, there is no way to prove that we all perceive colors the same way (i.e. is my "blue" your "blue") - or even if someone with monochromacy would see everything as "gray". For all they know, "gray" could be my "blue" or my "red", but they would call it grey since when they saw our "gray", even if it appeared to them as a different color, we defined it as "gray" for them.

[Edited on January 5, 2013 at 4:54 PM. Reason : .]

1/5/2013 4:51:47 PM

^highdeas

1/5/2013 5:09:49 PM

^^Some of the ambiguity could be resolved with tri- (or di- in the case of colorblind people) stimulus values: http://hyperphysics.phy-astr.gsu.edu/hbase/vision/colper.html

Still, sometimes confusion reigns, as in a story I read about online about a protanope who told a classmate that the bricks in the classroom were pink, leading that classmate to think he must literally see the world through rose-colored glasses, because to him they looked grey; IMO the protanope just saw "pink" as another word for the achromatic "grey" and was trying to figure out which term a trichromat would use for that particular situation.

[Edited on January 5, 2013 at 5:41 PM. Reason : if only we hooked people up to machines to measure the stimulation of their optic nerves

1/5/2013 5:40:48 PM

Adobe illustrator and most of Adobe 's other imaging products have color blind simulation built in. I used plugins for this for years.

I deal with color blindness limitations in design on a daily basis. Microsoft has very strict and comprehensive accessibility requirements for color, contrast and text sizing.

1/5/2013 6:39:32 PM

This image (showing how deuteranopes see ROYGBIV) came from a post about why using a straightforward rainbow color map is a terrible idea for data visualization; the main problem is that variations in fully-saturated hues cause uncorrelated variations in luminance (which humans are more sensitive to), but it also causes problems for colorblind people: http://mycarta.wordpress.com/2012/05/28/the-rainbow-is-dead-long-live-the-rainbow-part-2-a-rainbow-puzzle/

2/2/2013 9:30:04 PM

interesting how people with low blue sensitivity see blue in some colors that I can't cognitively detect blue actually being present in.

2/2/2013 10:01:28 PM

If you're talking about the simulation of tritanopia in the OP, it's an issue with the tritanopia simulator, which appears to use blue rather than green as the "second color" even though the color associated with the greatest relative stimulation of the M cone actually is green.

If you're talking about the simulations of protanopia and deuteranopia in the OP, well the pink color that I chose is not a lighter version of standard red but rather approximately light magenta, and magenta objects reflect light at both ends of the visible spectrum.

If you're talking about the post just above yours, it's not so much that there's "blue in" violet light but rather that violet light stimulates the S cone just like blue light (it actually stimulates the S cone more in absolute terms than blue light does, but relative to the secondary response of the L cone, it's not so great, which is why violet light looks like "blue with a little red").

2/3/2013 12:45:52 AM

More like, a visualization of Heat Man's stage in Mega Man 2.

2/3/2013 11:24:25 AM