You can create a lot of palettes and ideas here https://color.adobe.com/create/color-wheel
Also you may be able to use a trick I have seen where people have essentially used the watermark module to create an svg file of a swatch or gradient to overlay on the edit to use for matching…there was an example some time ago here using this technique to match a desired skin tone…but it could be used in grading as well…
And Here Paletton - The Color Scheme Designer
EDIT
Here was the thread I was trying to describe…just FYI Natural skintone with reference colors