Palette Vault is out. Generate color palettes in OKLCH, pull them out of an image or out of the layers you already made, and turn them into swatches, fills or color styles.
Color styles are the reason I built it for Framer specifically. A style holds a light and a dark value, so the plugin works out the dark counterpart of each color for you and saves eight values as four styles. The derivation happens in OKLCH, so the dark variant keeps its hue instead of drifting.
There is also a contrast check against all five WCAG thresholds at once.
Free, runs entirely on your machine.
Palette Vault·Plugin