Vectary. Graphite blueprint with violet signal.

Vectary operates on a near-monochromatic canvas: white surfaces, graphite-scale text from #252525 down to #949494, and zero chromatic noise until action is required. Visual hierarchy is built from weight and size, not color — Inter at weight 900 reserves itself for display moments, weight 700 for section headings, weight 400 for everything else. A single vivid violet (#6100ff) functions as the system's only color, appearing exclusively on the gradient CTA to signal the one thing the user can do. Components stay flat with hairline restraint, and the overall feeling is that of a precise drafting instrument rather than a decorated product.