Use case 3
- Author: Jarno Huusko
- Date / Version: 20/02/2024 / 1.0
User roles
- UI/UX dev (Actor1): Responsible for designing the user interface with enhanced color contrasts or a dedicated colorblind mode.
- Dev (Actor2): Implements the UI/UX design changes in the web app.
- Tester (Actor3): Validates the contrast enhancements against accessibility standards.
Prerequisites / Conditions
- An understanding of colorblind accessibility needs and the common types of color vision deficiencies.
- The web app's current UI must be accessible for review and modification.
Use Case Diagram
Description of use case -eg. Modify existing request
- Research: The UI/UX Designer researches best practices for color contrast and accessibility for colorblind users.
- Design: A new UI design is created, featuring enhanced color contrasts and optionally a separate colorblind mode. This design includes adjustments to text-background contrast, button color differentiation, and visual indicators that don't rely solely on color.
- Review: The design is reviewed by a focus group, including colorblind users, to gather feedback.
- Implementation: The Front-end Developer implements the new design, ensuring that all elements meet the enhanced contrast requirements.
- Testing: The Accessibility Tester conducts tests to ensure the contrast meets or exceeds WCAG (Web Content Accessibility Guidelines) standards for accessibility.
- Feedback Loop: Based on testing results and user feedback, adjustments are made to further refine the UI for colorblind accessibility.
Exceptions
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E1: If user feedback indicates that the contrast enhancements are insufficient, further design iterations are conducted.
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E2: If technical limitations prevent the implementation of certain design features, alternative solutions are explored.
Result
- The web app's user interface features enhanced color contrast suitable for colorblind users, improving accessibility and usability.
Use frequency
- This use case is initially executed during the development phase and revisited as part of ongoing UI/UX enhancements and accessibility audits.
Additional information
- Documentation of design decisions, user feedback, and testing outcomes should be maintained to inform future accessibility enhancements.
Sources
- Follows accessibility guidelines and best practices as outlined in WCAG and other relevant resources on colorblind accessibility.