Values in Armand Guillaumin tilt decisively toward white, giving the palette its luminous character. Armand Guillaumin keeps warm and cool in parity, a balance that lends the work a perceptual shimmer. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. 34.4% of the palette belongs to #ECEEEB, a concentration that makes it the unmistakable visual centre. The highest-chroma note - #D1C368 - appears at just 3.8%, deployed as a precision accent against the quieter ground. At 68 units of value range, the palette has the tonal breadth to sustain complex spatial readings. This is palette 1 of Armand Guillaumin's sequence - a single chapter in a chromatic story told across many works.