Sumi Navigation Kit

Sumi Navigation Kit is a set of 15 navigation and input components drawn in the cel-shaded style, where a thick ink outline wraps two flat tones split by a hard diagonal terminator. It contains active and inactive tabs, a scrollbar track, thumb and two arrows, a dropdown in closed and open states with its menu, idle and focused text fields and round close, back, plus and minus buttons.

Most free UI kits stop at panels and buttons, which means the first settings screen you build is the moment you start drawing your own art. This is the rest of it: the parts a menu actually needs before it works.

The shadow is a single hard-edged shape with no falloff — the defining property of cel shading, and the thing a gradient can never imitate. The outline uses the darkest tone in the palette rather than the border tone, or it reads as a thick grey frame instead of ink.

Inside that style this is the Sumi reading of it: a dark interface on a charcoal wash palette with seal red accents, built around two concentric frames, tab-shaped buttons at 120x48, glossy bars divided into 9 segments, and outlined icons on a 32px grid. Those measurements are why two families can share an art style without being interchangeable: the style decides how an edge is drawn, the numbers decide what the interface is for.

The focused text field widens its outline instead of only changing colour, because a focus ring that is only a hue disappears in high-contrast mode and takes keyboard navigation with it. The active tab merges into the surface below it rather than just brightening, which is what makes it read as connected.

Every sprite ships as an editable SVG and as transparent PNG at 1x, 2x and 4x, so you can drop the PNGs straight into an engine or open the vector and change a colour. Built to the same measurements as the rest of the Sumi family, which means this kit and the Sumi panel kit line up without either being resized. A good fit for cel-shaded and toon-rendered games.

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