barmar Posted December 13, 2010 Report Share Posted December 13, 2010 Wikipedia says that deuteranomaly, the most common form of color blindness, affects 6% of males. This is one of four forms of color blindness that are grouped under "red-green", and the other 3 affect about 1% of males. So in total we're talking about 9% of males. However, I'd expect that color blind playes are better at recognizing the shapes of the suit symbols, since they rely less on the color cues. Although if they're used to traditional red and black suits, which they can still distinguish, they could be caught off-guard when they encounter 4-color cards. Quote Link to comment Share on other sites More sharing options...
NickRW Posted December 14, 2010 Report Share Posted December 14, 2010 I have a friend who is a keen amateur snooker player who has distinct red/green colour vision impairment. He gets by - he just has to look twice sometimes. So, sure blue/red/orange/green (say) is maybe not the optimium choice for suit colours - but I don't buy that it makes matters significantly worse for some people and should not therefore be used when in fact it makes things much better for quite a lot of folk. Anyway, just pick more optimum colours - black, deep red, pale orange and turquoise should put most objections to bed. Nick Quote Link to comment Share on other sites More sharing options...
barmar Posted December 14, 2010 Report Share Posted December 14, 2010 Are these the same colors as in bidding boxes? It would probably be best to keep things consistent between them. Although bidding boxes have the added feature that the positions of the tags on the cards reflect the suit ordering, so players probably depend less on the color coding. 1 Quote Link to comment Share on other sites More sharing options...
NickRW Posted December 14, 2010 Report Share Posted December 14, 2010 Are these the same colors as in bidding boxes? It would probably be best to keep things consistent between them. Although bidding boxes have the added feature that the positions of the tags on the cards reflect the suit ordering, so players probably depend less on the color coding. The majority of colours I see in England are like this, though some are like this. And I've seen yet a third variation recently. I agree that consistency would be best. Perhaps some card and bid box manufacturer wants to take up the challenge???? Nick Quote Link to comment Share on other sites More sharing options...
NickRW Posted December 14, 2010 Report Share Posted December 14, 2010 Oops - duplicate Quote Link to comment Share on other sites More sharing options...
BillHiggin Posted December 14, 2010 Report Share Posted December 14, 2010 Wikipedia says that deuteranomaly, the most common form of color blindness, affects 6% of males. This is one of four forms of color blindness that are grouped under "red-green", and the other 3 affect about 1% of males. So in total we're talking about 9% of males. However, I'd expect that color blind playes are better at recognizing the shapes of the suit symbols, since they rely less on the color cues. Although if they're used to traditional red and black suits, which they can still distinguish, they could be caught off-guard when they encounter 4-color cards. At the size used for pips on playing cards, the 4 color schemes do not cause me much trouble. When used in publications at smaller text font scale, the orange and green can tend to disappear (which is very annoying). The ♦ symbol offered in this editor is NOT my friend. Quote Link to comment Share on other sites More sharing options...
gordontd Posted December 14, 2010 Report Share Posted December 14, 2010 The worst cards to play with are the older decks with the scanner codes at the top, before the duplimates with the optical scanner came out. You look at a lot of gibbersh but a few tourneys still use these for pre-dooped boards. They're widely used here. I don't notice the bar-codes at all, and I'd be surprised if anyone did who played with them much. Brains are good at editing out the stuff that's irrelevant to their needs. Quote Link to comment Share on other sites More sharing options...
Gerardo Posted December 15, 2010 Report Share Posted December 15, 2010 At the size used for pips on playing cards, the 4 color schemes do not cause me much trouble. When used in publications at smaller text font scale, the orange and green can tend to disappear (which is very annoying). The ♦ symbol offered in this editor is NOT my friend. If using Firefox or Chrome, try the Stylish extension with this style: Bridge Base Forums - Red/Black Suits Quote Link to comment Share on other sites More sharing options...
Vampyr Posted January 6, 2011 Report Share Posted January 6, 2011 They're widely used here. I don't notice the bar-codes at all, and I'd be surprised if anyone did who played with them much. Brains are good at editing out the stuff that's irrelevant to their needs.No, I don't think people do notice them. We are really used to them here, and in fact rarely use any other type. I do remember, however, the first time I saw bar-coded cards. It was many years ago, and I was very hung over, and the bar codes were making me dizzy and also causing me to feel like I was going to vomit. 1 Quote Link to comment Share on other sites More sharing options...
Trinidad Posted January 6, 2011 Report Share Posted January 6, 2011 No, I don't think people do notice them. We are really used to them here, and in fact rarely use any other type. I do remember, however, the first time I saw bar-coded cards. It was many years ago, and I was very hung over, and the bar codes were making me dizzy and also causing me to feel like I was going to vomit.Careful use of the Ockham's razor principle might suggest that the bar codes were not the cause of your troubles. :) ;) Rik 3 Quote Link to comment Share on other sites More sharing options...
66ANDY Posted May 18, 2019 Report Share Posted May 18, 2019 The red/green colour blindness point is one that I hadn't thought of - it could well be common enough to be a powerful argument against using 4 different inks, rather than light. vs dark for clubs and spades.Yes, red-green color-blindness affects about 2% of the population - and therefore 4% of men (because the color-blind gene is recessive in women). It is a good reason against the green clubs. The orange diamonds are no more of problem to them than the red ones, I imagine. I want to understand who put the black-red-orange-green foursome into play. Just about all the bidding boxes I see use these four suit colors. I am researching this subject. Here in Europe I have played with decks that had orange diamonds and gray clubs which I think you can find in Germany and in Spain. That seems like the best solution for the moment. Personally I want 4-color cards to become the standard. I do not like having two red suits. Quote Link to comment Share on other sites More sharing options...
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