Vaunt (Color Juicer) – “An app that extracts dominant colors from any image! Simply open the Vaunt App on your menu bar, drag and drop an image and click on a color of your choosing. Save time to create more.”
This works simply. Just download and install the app from the Mac Store. Open the app and then click on the icon in your top bar, drag a pic onto the open screen, and it automatically generates a color palette. Select the type of code you export and then click on a color to copy it to your clipboard. That’s it.