1: Go to product edit page.
2: Go to variation Swatches setting.
3: Go to color(attribute)setting.
4: Go to display type and select image/color from drop down.
5: Set display name “yes”.
6: Then go to variations(black,navy).
7: Set enable “yes” from drop down.
8: Set display type color/image according to your need.
9: Then click on update button.