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414 Chapter 12 Understanding Usability and Accessibility<br />

5. Open a browser, and in the Address bar, type http://gmazzocato.altervista.org/<br />

colorwheel/wheel.php to open the Accessibility Color Wheel page.<br />

6. Under the Normal section, in the 1* box, type #0000ff, and in the 2* box, type<br />

#ff33cc. Click Update.<br />

The text and background colors of the Normal, Deuteranope, Protanope, and<br />

Tritanope text areas change to reflect how the color scheme looks to people who<br />

have visual impairments. The contrast ratio in each area is updated, which you can<br />

check to see whether it meets relevant accessibility guidelines.<br />

CLEAN UP Close the browser. Close the CSS Properties task pane. Leave SharePoint<br />

Designer open if you are continuing to the next exercise.<br />

Testing for Usability<br />

Developing, launching, and testing is the fourth and final stage in the user-centered<br />

design life cycle. At this stage you might already have a fully functioning prototype developed<br />

using SharePoint. If your prototype is a low-fidelity paper-based version or a<br />

more advanced interactive version using wireframe production software, you will need<br />

to translate your information architecture and branding into the SharePoint environment<br />

of master pages, layouts, CSS files, and imagery.

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