import { Palette } from '../palette.js';
import { InteractiveSwatchSet } from '../recipe.js';
import { Swatch } from '../swatch.js';
/**
 * @internal
 */
export declare function neutralStroke(palette: Palette, reference: Swatch, restDelta: number, hoverDelta: number, activeDelta: number, focusDelta: number): InteractiveSwatchSet;