" A second technician gauges Werner’s eye color against a chromatic scale on which sixty or so shades of blue are displayed. Werner’s color is himmelblau, sky blue. To assess his hair color, the man snips a lock of hair from Werner’s head and compares it to thirty or so other locks clipped to a board, arrayed darkest to lightest. “Schnee,” the man mutters, and makes a notation. Snow. Werner’s hair is lighter than the lightest color on the board. "

― Anthony Doerr , All the Light We Cannot See