A testament to Albers' lifelong fascination with the interaction of color, this lithograph features concentric squares of subtly shifting hues separated by a delicate white line that appears to radiate its own luminous energy. The white line, central to this series, creates an optical illusion of depth and spatial tension, causing the surrounding colors to vibrate and transform in the viewer's perception. Printed on Arches Cover paper, the work exemplifies Albers' precise and methodical exploration of how colors influence and alter one another when placed in close proximity.