Louis Gauffier occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Louis Gauffier balances warm and cool with remarkable evenness, giving the composition its characteristic vibrancy. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. The highest-chroma note - #906E40 - appears at just 10.1%, deployed as a precision accent against the quieter ground. 43 units of value spread create a palette that is varied but unified - contrast in the service of harmony. This is palette 4 of Louis Gauffier's sequence - a single chapter in a chromatic story told across many works.