One of the most recommended Figma plug-in that stimulates various types of colorblindness. Stark can also be use to check color-contrast ratios of your designs.
Able is one of the most recommended plug-in for Figma that helps you to measure color-contrast ratio and simulate color blindness.
A classical tool, made by Google in 2014, to help you to build accessible color palette for your user interfaces and measure the accessibility of your own color combinations.
Find, test & explore accessible colors. A pleasant and intuitive tool to help designers to build color palettes. Certainly the tool I use the most when I'm doing visual design.