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The Colour Contrast Analyser (CCA) version 3.5.5, published by Cédric Trévisan, belongs to the accessibility testing category and is purpose-built to quantify whether text and non-text visual elements meet internationally recognised contrast ratios. By sampling foreground and background colours from any point on the screen, the utility calculates immediate pass/fail results against WCAG 2.1 guidelines for both normal and large text, while also evaluating graphical controls, focus indicators, and icons that convey information. Designers use the live eyedropper during early mock-up stages to iteratively adjust palettes, developers invoke the tool to verify implemented colour pairs in staging environments, and QA auditors document evidence for accessibility statements. Eight successive versions have refined support for alpha channels, expanded colour-space formats, and added side-by-side comparison panes, giving teams a lightweight yet precise reference that complements larger design suites. The software is available for free on get.nero.com, with downloads provided via trusted Windows package sources (e.g. winget), always delivering the latest version, and supporting batch installation of multiple applications.
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