A masterful exploration of color interaction and optical illusion, this lithograph exemplifies Albers' lifelong investigation into the relationship between colors and their perceived effects on one another. Concentric squares of carefully chosen hues are separated by a precise white line, which activates the surrounding colors and creates a subtle sense of luminosity and spatial depth. The work reflects Albers' foundational belief that color is never experienced in isolation, but is always transformed by its neighboring tones.