I am currently working on a game with some friends, but I can't decide which palette I should stick with. I've been looking for a few days but I can't seem to find one that might fit. I am also worried if I choose a palette with not enough variety it would severely limit the game's final outcome and graphical look; primarily, what would be a recommended palette size for a game?

for context, the game genre is idle and it's themed around ores and underground mining, so a few shades of some more vibrant tones with primarily earthy tones is what I'm aiming for. Any words of advice for finding what I'm looking for, or possibly palette recommendations would be great. Oh, and if it's of any help, Aseprite is my weapon of choice. Thanks!