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By tones we mean the shade of color you are selecting for your quilt. Tones are colors that are dulled versions of the pure hue. For example instead of using a bright red, you would use a dull red like the color of old bricks. Or instead of using a bright blue, you would use a dull blue, like the color of a stormy sky. Tones are less noticeable and thus blend nicely into your design.
To learn more about color, you can check out my book: A Fiber Artist’s Guide to Color & Design.
Hope this helps!
Related Video: Choosing the Perfect Thread Color for Your Quilt Design
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