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Also, what percentage of the populations color blind? You'd have people boarding for red when green was called, etc. Letters give us 26 possible boarding stages
by rquantz 15y ago
Also, what percentage of the populations color blind? You'd have people boarding for red when green was called, etc. Letters give us 26 possible boarding stages. Even without keeping accessibility is mind, you'd only be able to reliably use, what, %w{red blue green yellow orange}? Purple is out -- too ambiguous.
So yeah, no color codes. Have I beaten it to death enough?
- roel_v 15y agoBut you only need two colors, and it's not impossible to select two colors that are recognizable by everybody including the color-blind.
- kanamekun 15y agoRegarding color blindness, you can also print the name of the color on the ticket. Or increase contrast: "What can be done to avoid confusion? Most sources on usability and interface design suggest avoid relying on color coding exclusively. Always provide an additional cue; don't rely on color alone. For example, the standard default web browser of a link is underlined blue lettering. Interestingly, this particular color coding would stand up quite well, even without the additional cue of the underline, since blue is the universally recognizable color. A second way to counteract color deficiency confusions is to make sure that colors have a high degree of contrast with each other." http://www.stcsig.org/usability/newsletter/9910-color-blindness.html http://www.stcsig.org/usability/newsletter/9910-color-blindn... There are a lot of guidelines and protocols for managing user color blindness in interfaces... it's generally not a sufficient reason to completely avoid the use of color in all cases.