Siraya Tech Navy Gray, for better results mix in 15% Tenacious Obsidian Black.
If you’re in the USA I highly recommend buying it by Navy Gray 5KG Jug for the best price.
If you need a very strong resin, hit it with a hammer resin. Or a resin that can have prolonged skin contact use Blu. For best results make sure the resin is above 30c during the entire print, I prefer 34c.
Disclaimer: I do get 5% from the Siraya Tech links in this guide. I recommended them before this, and would recommend them if I no longer did. None of the other links are affiliates, my youtube channel is not monetized.