/**
 * Change color format to hex in Pika.
 *
 * @returns Pika format hex URL.
 * @example
 * formatHex()
 * // => 'pika://format/hex'
 * @link https://github.com/superhighfives/pika/blob/main/Pika/Views/HelpView.swift
 */
export declare function formatHex(): string;
/**
 * Change color format to RGB in Pika.
 *
 * @returns Pika format RGB URL.
 * @example
 * formatRgb()
 * // => 'pika://format/rgb'
 * @link https://github.com/superhighfives/pika/blob/main/Pika/Views/HelpView.swift
 */
export declare function formatRgb(): string;
/**
 * Change color format to HSB in Pika.
 *
 * @returns Pika format HSB URL.
 * @example
 * formatHsb()
 * // => 'pika://format/hsb'
 * @link https://github.com/superhighfives/pika/blob/main/Pika/Views/HelpView.swift
 */
export declare function formatHsb(): string;
/**
 * Change color format to HSL in Pika.
 *
 * @returns Pika format HSL URL.
 * @example
 * formatHsl()
 * // => 'pika://format/hsl'
 * @link https://github.com/superhighfives/pika/blob/main/Pika/Views/HelpView.swift
 */
export declare function formatHsl(): string;
/**
 * Change color format to LAB in Pika.
 *
 * @returns Pika format LAB URL.
 * @example
 * formatLab()
 * // => 'pika://format/lab'
 * @link https://github.com/superhighfives/pika/blob/main/Pika/Views/HelpView.swift
 */
export declare function formatLab(): string;
/**
 * Change color format to OpenGL in Pika.
 *
 * @returns Pika format OpenGL URL.
 * @example
 * formatOpenGL()
 * // => 'pika://format/opengl'
 * @link https://github.com/superhighfives/pika/blob/main/Pika/Views/HelpView.swift
 */
export declare function formatOpenGL(): string;
/**
 * Change color format to OKLCH in Pika.
 *
 * @returns Pika format OKLCH URL.
 * @example
 * formatOklch()
 * // => 'pika://format/oklch'
 * @link https://github.com/superhighfives/pika/blob/main/Pika/Views/HelpView.swift
 */
export declare function formatOklch(): string;