Randoma11y provides accessible color combinations to help web developers meet accessibility standards for color contrast. It generates random pairs of foreground and background colors that meet a minimum contrast ratio of 4.5:1 for legibility. It includes code snippets demonstrating how to apply the colors in CSS. It also explains that color contrast is important for people with low vision to be able to distinguish text from the background. Users can copy/embed code to include the color picker on their own sites.