This swatch book eliminates all the worries about the color fidelity of your device or the descriptions. (Though, the descriptions seem spot-on.). I have one of those in-between undertones and have enough trouble matching foundation, much less fine leather footwear. I was able to peel up each swatch about half way, hold it against my foot, squint my eyes, and see the correct shade seem to disappear. It’s such a relief to be confident in my choice of color.