Op Art sits in the centre of the value range, lending the palette a sense of even, sustained light. The artist keeps warm and cool in parity, a balance that lends the work a perceptual shimmer. All colours lean toward grey, building depth through value rather than colour punch. The highest-chroma note - #392911 - appears at just 3.3%, deployed as a precision accent against the quieter ground. From deepest dark to palest light, the palette traverses 78 units of the value scale - a span that creates natural depth.