Select Color From Gradient as a New Color Swatch

If I understand the question correctly, my answer would be no, not with eyedropper.

But, yes, through color picker.

With no object selected, select your gradient in the swatches panel.

In the gradient panel, select the color stop you want to retrieve in the gradient ramp.

Then open the color picker and click on "Add CMYK Swatch" (or RGB if relevant). Please note that if button reads "Add RGB Swatch" and that you want it CMYK, just place tour cursor in any CMYK value in order to be able to save as CMYK.

Now, that you have added the colors to the swatch panel, you must be aware that they are not "linked" to your gradient.

Meaning that if you change the value of a color, gradient will not change.

If you want to go further, you can open the gradient options by double clicking on the gradient swatch.

Then, for each color stop, assign the relevant color swatch.

You can now change your color values and your gradient will change accordingly.

Hope that helps

(hope I understood your question really)

Vinny

You can't generate a swatch, but you can read CMYK output values via Separation Preview and make one. So if you are looking for document CMYK values this would work:

No, the Eyedropper tool in InDesign reads colors and tints and overprints.