Colour Contrast Analyser is a free, open-source accessibility testing application designed to evaluate the readability of text and visual interface elements. It calculates contrast ratios between foreground and background colors to help designers meet Web Content Accessibility Guidelines. Users can select colors through an integrated eyedropper, RGB sliders, or direct CSS color entry. The software displays WCAG 2.1 compliance indicators for normal text, large text, and graphical components. ...