Go Inside the product setting go to:-

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.