4.1.4 Region 4—Light Brown: L = 30 to 60 a = –1.5 to 12.5 b = 3.0 to 12.5 4.1.5 Region 5—White: L = 83 to 100 a = –4 to 0 b = –5.5 to +5.5 NOTE 4—L, a, b is determined in accordance with the Hunter L, a, b opponent color space system in Test Method D2244.