If you’ve created a color palette for a website or app, you’ve probably encountered a few of the challenges in creating color palettes for user interfaces. One of the most common challenges is meeting accessibility criteria such as a minimum contrast ratios defined by the Web Content Accessibility Guidelines (WCAG).

A project to make it easier for designers and engineers to leverage color science to create custom interpolations for a value scale, and to make it easier for designers and engineers to conform to WCAG minimum contrast standards by using contrast ratio as the starting point, rather than a post-color-selection auditing process.