Corner Spiral - HSV

one unbroken line starting at a corner, hugging each wall, spiraling inward to the center, visiting all 16,777,216 pixels exactly once. But here the color at each step is driven by hue, saturation, and value instead of raw RGB, hue spins around a full 14 times over the course of the spiral, while saturation and brightness drift the whole way in. That's why the outer rings look pale and washed out, and the pattern deepens into rich, saturated, almost jewel-toned rings as it nears the center. Same line, same rule (every color once), completely different personality.