Just call it the muted side instead of the wrong side....��

Absolutely use the side that is best for your needs. I have used both sides in the same quilts before because the "wrong" side was just the perfect color and blended beautifully. And you don't even need to feel like you should explain as no one will be able to tell.....and won't notice anyway.
But to answer your question, the quality of the fabric is the same on both sides, only the colors may be different.

To me it's not the "wrong" side, rather the "other" side!
Use it and enjoy yourself :)
I consider you very clever!

I tell folks that quilters get a better deal because we buy 2 fabrics in 1! Often I will use the back side to coordinate.

This has been asked before with the response that many of us DO use the backs as well as the fronts. Usually been said that "you pay for both sides so use whichever one you want".

It’s not a problem. When my youngest daughter was little, I went to JoAnn’s and I found the perfect pansy fabric. I chose all of the coordinating fabric at the same time. They were lovely pastels. When I got home I realized that the pansy fabric had been folded right side together on the bolt. It was very bright. I used the wrong side without any problem.

I love the option of using the side that works. It's so good to be able to do that. I've used the other side rather often.

I often found that once I turned a piece of fabric over I discovered the exact shade I needed. I felt so clever.

Just think! Your stash is twice as big when you use both sides of your fabric.

I pay for both sides of my fabric and use the side that works best in my project. No one ever knows once it’s in your quilt what the other side looks like.