Khroma is an AI-powered color tool geared for designers. It'll generate palettes based on your preferences using an algorithm trained on the colors you select. The service has a lot of features, including search and filtering, palette management and detailed color information like hex codes and CSS code. That means it's a good option for storing, organizing and using your favorite palettes.
Another good option is Perception, which offers research-backed recommendations and AI tools to help you improve your color palette choices. The service offers a palette generator, analyzer, inspirer, validator and dictionary to help you make color choices that are impactful and resonant. It also offers a variety of pricing options, including a free Lite plan, so you can find something that works for your needs and budget.
If you want a more complete service, Brandity offers an AI-powered service that generates a complete brand identity, including customized color palettes, typography and art direction. It requires you to submit a business case to get the brand assets it thinks you'll need, but it ensures consistency across all visual elements. Brandity offers flexible subscription plans, too, including a free 14-day trial, which can be useful if you're trying to establish a visual identity for your business.