If you have a specific set of colors you'd like to use in your dashboard, this video will show you how to pull those in and use them in Tableau. This video demonstrates how to use the hex value for colors to add a custom set of colors for your dimensions in Tableau Desktop. This LOOKS scary, because you have to edit an XML file, but it's really very simple. I'd like to paste a code snippet, but YouTube won't let me put angle brackets in the description, so you'll have to watch the video!
This is great for adding corporate colors or clients colors to your dashboards, so they feel their dashboards fit in with their overall corporate image. If you'd like to do this for continuous variables (not just dimensions) check out the video here: • Add a Custom Color Palette for Continuous ...