Low-key values are the structural spine of Isaac Snowman, giving it gravity and atmosphere. Isaac Snowman balances warm and cool with remarkable evenness, giving the composition its characteristic vibrancy. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. 26.0% of the palette belongs to #17141D, a concentration that makes it the unmistakable visual centre. #84593D delivers the chromatic peak at only 3.6% - a small shot of colour with outsized visual impact. 55 units of value range underpin the palette's structural clarity: the eye always knows where light falls. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. Palette 4 sits within the larger chromatic argument that Isaac Snowman's complete body of work advances.