Copy swatches between InDesign documents
You can copy or drag a swatch (or objects with a swatch applied) from one document to another. When you do so, the swatch is added to the destination document’s Swatches panel. If you want to copy the swatch’s tints and gradients as well, you need to copy the original object, not just the swatch.
Do one of the following:-
Copy an object into the current document using drag-and-drop or copy-and-paste.
-
Select the swatches you want to copy and drag them from the Swatches panel to the document window of another InDesign document.
Note: If you drag a swatch that has an identical name as an existing swatch (including capitalization) but has different color values, InDesign renames the swatch “[original swatch name] 2.”