Louis Albert Guislain occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. The highest-chroma note - #223644 - appears at just 5.0%, deployed as a precision accent against the quieter ground. A value spread of 60 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. The palette is a signature: Louis Albert Guislain's particular sense of value, warmth, and colour weight made legible.