If you want a service to store and curate your favorite palettes, Khroma is a great option. The AI-powered design tool lets you create custom palettes based on your preferences. It employs an algorithm trained with a neural network to produce an infinite number of palettes suited to your taste. You can also save and organize your favorite color combinations along with the color names, hex codes, RGB values and other details.
Another option is Huemint, a machine learning-based color palette generator. The tool can generate custom and unique color schemes for brands, websites and graphics. You can choose from different generation options, presets and AI models to generate palettes. Huemint also lets you upload images to generate color palettes, so it's a good option for designers, marketers and anyone else looking to improve their visual brand.