import type { Reader } from "../binary/reader.ts";
/**
 * CPAL (Color Palette) table parser
 * Provides color palettes for color fonts
 */
export interface CpalTable {
    version: number;
    numPalettes: number;
    numPaletteEntries: number;
    palettes: ColorPalette[];
    paletteTypes?: number[];
    paletteLabels?: number[];
    paletteEntryLabels?: number[];
}
export interface ColorPalette {
    colors: Color[];
}
export interface Color {
    blue: number;
    green: number;
    red: number;
    alpha: number;
}
/**
 * Palette type flags
 */
export declare enum PaletteType {
    UsableWithLightBackground = 1,
    UsableWithDarkBackground = 2
}
/**
 * Parse CPAL table
 */
export declare function parseCpal(reader: Reader): CpalTable;
/**
 * Get color from palette
 */
export declare function getColor(cpal: CpalTable, paletteIndex: number, colorIndex: number): Color | null;
/**
 * Convert color to CSS rgba string
 */
export declare function colorToRgba(color: Color): string;
/**
 * Convert color to CSS hex string
 */
export declare function colorToHex(color: Color): string;