/**
 * @license
 *
 * The APCA contrast prediction algorithm is based of the formulas published
 * in the APCA-1.0.98G specification by Myndex. The specification is available at:
 * https://raw.githubusercontent.com/Myndex/apca-w3/master/images/APCAw3_0.1.17_APCA0.0.98G.svg
 *
 * Note that the APCA implementation is still beta, so please update to
 * future versions of chroma.js when they become available.
 *
 * You can read more about the APCA Readability Criterion at
 * https://readtech.org/ARC/
 */
