Contrast Ratio Evaluation on Undiksha E-Learning Website for Partial Color Blindness People Using WCAG 2.1

Contrast ratio evaluation plays a crucial role in enhancing the accessibility of website designs. This research investigates the contrast ratio values of the Universitas Pendidikan Ganesha (Undiksha) e-learning website and provides color improvement recommendations for users with partial color blindness. We employed the minimum color contrast success criteria from Web Content Accessibility Guidelines (WCAG) 2.1 and two evaluation automation tools: WCAG Color Contrast Checker and Polypane Color Contrast Checker, to evaluate and improve the contrast ratio of two e-learning webpages categories, login and no-login. Findings showed that 27% (191 components) in the no-login required category and 34% (659 components) in the login-required category did not meet the minimum contrast ratio. All such components received improvement recommendations. After the contrast ratio remediation, all components successfully met the minimum contrast value according to WCAG 2.1 standards. This research reveals that the Undiksha's e-learning website interface contained a significant number of components that failed to meet the minimum contrast ratio standards for individuals with partial color blindness. Enhancing these components based on the recommendations is necessary to increase the level of accessibility of the website. This research contributes to the fields of web design, accessibility, and e-learning by emphasizing the important role of accessibility considerations in developing and maintaining e-learning websites. It ultimately fosters a more inclusive and equitable digital educational experience for all.