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.
If you're using a web font, you're bound to see a flash of unstyled text (or FOUC), between the initial render of your websafe font and the webfont that you've chosen. This usually results in a jarring shift in layout, due to sizing discrepancies between the two fonts. To minimize this discrepancy, you can try to match the fallback font and the intended webfont’s x-heights and widths . This tool helps you do exactly that.