Charcoal UI Controls — checkbox, toggle and slider

Controls at 28px, the largest in the catalogue. A wobbling outline needs room before the wobble reads as a hand rather than as a rendering fault, and at 20px it just looks like the renderer is broken.

The set covers the four controls a settings screen actually needs: a checkbox, a radio button, a toggle switch and a slider with a separate knob. Each stateful control ships both states as its own file, at a 28×28 base — the toggle is 56×28 and the slider track is 224 px wide so it can be nine-sliced to any length.

On and off are drawn as different shapes, not different colours. An unchecked box is an empty recess; a checked one is a filled surface with a tick cut into it. That matters because a settings screen is exactly where a player is most likely to be running a colourblind mode, a greyscale shader, or a heavily tinted post-process — and a state you can only read by hue disappears under all three.

The slider ships as a track and a knob rather than a single sprite. Animating a one-piece slider means redrawing it per value; with two pieces you stretch the fill and move the knob, which is what every UI toolkit already expects. The knob carries a centre notch so its rotation and position stay readable at small sizes.

Everything is included as editable SVG and as flat transparent PNG at 1x, 2x and 4x, drawn from the same six smoke grey tones as the rest of the Charcoal family.

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