[sjcro]

The double dummy markers in green and red are not distinguishable for many people who are color-blind because red and green look the same. Would it be possible to make the red ones a different shape from the green ones? Or to distinguish them in some other way?. Eg. with - and +?

[pilowsky]

sjcro, on 2021-February-26, 17:26, said:

The double dummy markers in green and red are not distinguishable for many people who are color-blind because red and green look the same. Would it be possible to make the red ones a different shape from the green ones? Or to distinguish them in some other way?. Eg. with - and +?

I have pointed this out in detail with references elsewhere.
5% of all men are red/green colour-blind.

The data did not say if that included Bridge-players but I have no reason to believe it would be different.

[fredwardwe]

Very much agree. Use squares or much bolder colors or something.

[pilowsky]

fredwardwe, on 2021-February-27, 20:31, said:

Very much agree. Use squares or much bolder colors or something.

The solution is to use magenta instead of red - this solves the problem.
Which side is easier to read?

[0 carbon]

Yes, magenta! BBO-Please check system for accessability!