Plug-in:
To help you designing accessible interfaces ??
Feel free to contact me to suggest a resource.

Figma: Accessible Form Fields
If only I found this component earlier! This Figma component designed by Tom Reinert will help you to design accessible forms: its initial contrast ratio is Level AA and has easily recognizable states.

Blurred Vision simulation
Stark now offers a new feature in its plug-in for Sketch and Figma that
stimulates blur vision - astigmatism, presbyopia, dry eye syndrome, cataracts,
glaucoma and age-relation macular degeneration.
This option is available
in the pro version of the plug-in for $60/yr.

Stark
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
Able is one of the most recommended plug-in for Figma that helps you to measure color-contrast ratio and simulate color blindness.