The Interplay of Chromatic Contrast and Typographic Legibility: Enhancing Mobile Interface Accessibility for Seniors with Age-Related Visual and Cognitive Declines

Abstract

Age-related visual and cognitive impairments significantly affect seniors' ability to interact with mobile interfaces, yet many contemporary applications fail to address these accessibility challenges adequately. This research examines the synergistic relationship between chromatic contrast and typographic legibility in mobile interface design for older adults aged 65 and above. Through a comprehensive analysis of current accessibility standards, empirical studies, and age-related physiological changes, this paper establishes evidence-based design guidelines that accommodate declining contrast sensitivity, reduced visual acuity, and cognitive processing limitations. The findings reveal that implementing WCAG 2.2 Level AAA contrast ratios (7:1 for normal text) combined with font sizes of 18 points or larger significantly enhances readability and reduces visual fatigue for seniors. Furthermore, the research demonstrates that carefully selected color combinations particularly high-contrast schemes such as black text on white backgrounds combined with sans-serif typefaces can compensate for age-related visual processing deficits. This paper provides practical design recommendations for creating inclusive mobile interfaces that bridge the digital divide and promote technological independence among the aging population.