Do you enjoy wearing black with pure white? Maybe that seems like way too much contrast for you.
Imagine a woman with high contrast in her own coloring, for example, a woman with pale porcelain skin and dark hair and eyes. She has a natural stark contrast within her own coloring, so she can easily carry off high contrast looks such as the combination of stark white with pure black.
Alternatively, the woman with soft gray hair, pale skin, and blue eyes might find various gray shades a better level of contrast for her color choices.
Each person will have their own set of color tones that are best for them. For example, your best red will be the same tone of red found on the inside of your bottom lip.
Look into the irises of your eyes. Do you see any gold there at all? If not, perhaps silver is your best metal color.
If you enjoy wearing black and white, your personal contrast level is likely high. If you are more comfortable in the gray and white combination, your personal contrast level is likely on the lower scale.
Learning what colors and intensity of colors work best for you is a large part of creating a successful wardrobe. There is no magic formula that works for everyone, and I don't claim to be a style expert, but I hope that what I share helps you think more about the details and identify what works best for you.