Leonardo alternatives

Low contrast text is the most common accessibility issue and affects 86.4% of pages. This free extension based on technology developed for Polypane (https://polypane.app) automatically fixes contrast issues on any site you visit.

Creating a nice looking SVG Color Matrix filter is tricky. This free web-app helps you easily create the right color matrix for your picture. Add contrast, brightness, hue, and saturation filters or adjust one or multiple matrix values simultaneously.

Generate solid colors for every purpose. Twitter avatars, banners, backgrounds, designs. With seamless dark mode, responsive design, and cross-browser support, you can make swatches on any device, any time, anywhere.

Color Contrast Tool analyses text color and background color based on the new, in-development WCAG 3 APCA which relies on human perception of color and gives a lightness contrast value instead of the current mathematical implementation of color contrast ratios