Palette tools help narrow a visual direction, but a pleasing group of colors is only the beginning. The palette needs to work with text, backgrounds and interactive states where it will be used.
Try the suggested colors in a small layout. Check contrast and how easily the main action stands out without relying only on color to communicate meaning.
Khroma helps users explore color combinations based on their preferences. It is useful for developing a palette direction, with contrast and readability checked separately in the actual design.
Choose colors that fit the mood of the project. Test the palette with real text and interface elements, especially where contrast affects readability.
Bring the same example to each tool you compare. Keep the original input and the edits you make to the result, so you can see where each option helps. Check the exported output in the next step of your work, rather than judging only the preview inside the application.
Before choosing a plan, check the product website for current access, usage limits and supported integrations. A useful shortlist matches the task you need to finish and the way you will reuse the result.