Charles Reiffel distributes its values across the middle register, creating harmony without high contrast. Charles Reiffel builds on cool foundations: the palette favours the blue-cyan-green arc. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. #9A7942 delivers the chromatic peak at only 10.1% - a small shot of colour with outsized visual impact. 53 units of value spread create a palette that is varied but unified - contrast in the service of harmony. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Palette 4 sits within the larger chromatic argument that Charles Reiffel's complete body of work advances.