MaptimeMSP: Tools - Color Accessibility

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Tools for Making Maps: Color Accessibility Kitty Hurley, GISP

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“In visual perception a color is almost never see as it really is… This fact makes color the most relative medium in art.” -Josef Albers, Interaction of Color, 1963

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Colorblindness Color blindness very rarely means that you can’t see any color at all, or that people see things in greyscale.

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Colorblindness Color blindness very rarely means that you can’t see any color at all, or that people see things in greyscale. It is actually a decreased ability to see color, or a decreased ability to tell colors apart from one another.

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What does it look like?

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What does it look like? (Red-Green)*

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What does it look like? (Red-Green) (Red-Green)*

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What does it look like? (Red-Green) (Red-Green)* (Blue-Yellow)

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• Don’t rely on color coding alone. • Pay attention to contrast. • Check with a [color] simulator. • User testing. But… what can I do?

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Simu… what?

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Color Accessibility Tools Color Accessibility Tools • Color Oracle: http://colororacle.org • Color Brewer: http://colorbrewer2.org Web Safe & Contrast Tools • Tanaguru Contrast-Finder: http://contrast-finder.tanaguru.com • Colorable: http://jxnblk.com/colorable • Color Transformations: http://safecolours.rigdenage.com/colours1.html

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Thank you! Comments? Questions?