Here is an excellent comparison picture of the Deep Indigo Swiftly on the Left and the Black Swan Swiftly on the right. I think there are differences between both colors but I probably wouldn’t want both. If you’re a purple girl just stick with the Black Swan. Personally I gravitate to blues in my closet so if I had Black Swan I’d sell it in order to get the Deep Indigo but I’d definitely not keep both.
Did you know you can get my outfit details right here? Just click on the image you want the details for and it will show you all the items.