/** Palette step keys produced by `generateColorScale`. */
export type PaletteStep = (typeof PALETTE_STEPS)[number] | 'input';
/** Token category that supports palette generation. */
export type PaletteCategory = 'brand' | 'accent' | 'base';
/** Map of palette step → resolved hex color. */
export type PaletteScale = Record<PaletteStep, string>;
/** Map of token dot-path → resolved hex color (e.g. `color.brand.500` → `#548cdc`). */
export type PaletteTokenMap = Record<string, string>;
export declare const PALETTE_STEPS: readonly ["50", "100", "200", "300", "400", "500", "600", "700", "800", "900", "950"];
/**
 * Generate an 11-step contrast-based color scale from a single hex color.
 *
 * Uses `@adobe/leonardo-contrast-colors` internally. The generation algorithm
 * is wrapped behind this function so the underlying library is swappable
 * without changing the public API.
 *
 * @param hex  - A valid hex color string (`#RGB` or `#RRGGBB`).
 * @param category - The token namespace (`'brand'` or `'accent'`).
 * @returns A `PaletteTokenMap` keyed by token dot-paths
 *   (e.g. `"color.brand.50"` through `"color.brand.950"` plus `"color.brand.input"`).
 */
export declare function generateColorScale(hex: string, category: PaletteCategory): PaletteTokenMap;
/**
 * Derive the base palette color key from a brand color.
 *
 * The base scale shares the brand's hue and lightness but is nearly neutral:
 * the brand color is converted to HSL and its saturation is lowered to
 * {@link BASE_SATURATION} (5%). The resulting hex is the color key fed to
 * {@link generateColorScale} for the `base` category.
 *
 * @param brandHex - A valid hex color string (`#RGB` or `#RRGGBB`).
 * @returns The normalised hex color key for the base scale.
 */
export declare function deriveBaseColorKey(brandHex: string): string;
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