/**
 * Utility class for block type operations.
 */
export default class BlockTypeUtilities {
    private static keywordColorHints;
    /**
     * Convert HSL color values to hex color string.
     * @param h Hue (0-360)
     * @param s Saturation (0-100)
     * @param l Lightness (0-100)
     */
    private static hslToHex;
    /**
     * Generate a fallback color for custom blocks without a defined map_color.
     * Uses two strategies:
     * 1. Keyword hints: If the block ID contains certain Minecraft-related keywords,
     *    use a color associated with that material/concept.
     * 2. Hash-based: If no keywords match, generate a consistent color from the block ID hash.
     *    This ensures the same block always gets the same color, but different blocks get distinct colors.
     *
     * @param blockTypeId The full block type identifier (e.g., "mymod:custom_stone_brick")
     * @returns A hex color string (e.g., "#7d7d7d")
     */
    static getCustomBlockFallbackColor(blockTypeId: string): string;
}