/**
 * Default categorical palette — validated for both color schemes.
 *
 * The same eight hues stepped for each surface (not an automatic flip): the slot
 * ORDER is the CVD-safety mechanism, chosen so every adjacent pair clears the
 * hard gates (worst adjacent CVD ΔE ≈ 9.1 light / 8.4 dark, OKLab ×100; normal-
 * vision ΔE ≈ 19.6 light / 19.3 dark) on the light `#FFFFFF` and dark `#1C1C1F`
 * chart surfaces. Do not reorder or re-step without re-running the palette
 * validator against both surfaces. Slots past #3 cannot clear the all-pairs
 * floors (scatter/bubble) — fold extras to "Other" or facet rather than cycling.
 */
export declare const paletteDefaultLight: string[];
export declare const paletteDefaultDark: string[];
/**
 * Back-compat alias — light is the historical default. Prefer selecting
 * {@link paletteDefaultLight} / {@link paletteDefaultDark} by the active scheme.
 */
export declare const paletteDefault: string[];
/**
 * Pick the validated categorical palette for a color scheme.
 */
export declare function getDefaultPalette(scheme?: 'light' | 'dark'): string[];
/**
 * Okabe–Ito colorblind safe palette (8 colors)
 */
export declare const paletteColorBlind: string[];
/**
 * High contrast palette for accessibility
 */
export declare const paletteHighContrast: string[];
/**
 * Available palette names
 */
export type PaletteName = 'default' | 'colorBlind' | 'highContrast';
/**
 * Options for color assignment
 */
export interface ColorAssignOptions {
    /** Palette name or custom color array */
    palette?: PaletteName | string[];
    /** Use deterministic hashing by id */
    hash?: boolean;
}
/**
 * Creates a color assignment function based on palette and hashing options
 * @param opts - Color assignment options
 * @returns Function that assigns colors by index or id
 */
export declare function createColorAssigner(opts?: ColorAssignOptions): (index: number, id?: string | number) => string;