Acc is a Chrome/Edge/Safari extension with two workflows: developer simulation of how pages look under different color-vision deficiencies, and reader assistance that improves contrast, link affordances, and status cues for a selected CVD type.
Simulation uses physiologically based transformation matrices (Machado et al.) with adjustable strength; assist mode targets practical readability rather than claiming a medical “fix.” Built as Manifest V3 (Chrome/Edge) with a Safari Manifest V2 variant.