Color PerceptSaturation boundary
See when a muted blue becomes gray enough to rename.
Each judgment shows one muted, cool color and asks a deceptively simple question: Gray or Blue? Across seven samples the saturation creeps along the line between a true neutral and an unmistakable dusty blue. Somewhere in that walk, your label flips — and that flip point, reported as an approximate saturation percentage, is your personal boundary for when gray earns the name blue.
Unlike the hue boundaries, this one is about chroma: how much blueness a gray can hold before you notice it. It sensitizes you to the quiet blues hiding in "neutral" walls, shadows and overcast light — once you find your boundary here, you start seeing blue-gray everywhere. Answer by first impression; the swatches that trigger doubt are the measurement working.
The saturation walk is regenerated every session, so your boundary is estimated from fresh samples each time. Low-saturation colors are the most display-sensitive family on the site: a washed-out panel can hide the blue entirely, while a vivid one invents it. Your percentage describes naming under these conditions, not the health of your color vision.
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