| Color vision begins with the activation cone cells. When one of the cone cells dysfunction, color vision deficiency (CVD) ensues. Due to CVD, users become unable to differentiate as many colors a normal person can. Lack of this ability results in less rich web experience, incomprehension of basic information and thus frustration. Solutions such as carefully choosing colors while designing or recolor web pages for CVD users exist. We first present the improvement in the time complexity of an existing tool SPRWeb[6] to re-color web pages. After that we present our tool, FBRecolor, which explores the foreground-background relationship between colors in a web page. Using this relationship we propose FBRecolor, which preserves naturalness, pair-differentiability and subjectivity. In the last part, we add an additional step in to FBRecolor to ensure that the contrast in the parsed color pairs meets the required W3C guidelines[5]. In evaluation, we found that FBRecolor does significantly better in preserving pair-differentiability and produces lower total cost solutions than SPRWeb. Quantitative experimentation of extension to FBRecolor shows that contrast ratio in each replacement pair is more than 4.5 as required for readability. |
