Low-key values are the structural spine of Willem Kalf, giving it gravity and atmosphere. Heat pervades this palette; warm chromatic identities outweigh cool ones at almost every weight. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. #0A080A claims 53.8% of the surface, functioning as the work's tonal foundation. #6C2C1F delivers the chromatic peak at only 1.1% - a small shot of colour with outsized visual impact. The value range of 48 units sits in the comfortable middle: enough depth, enough light, neither extreme. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. Willem Kalf's palette 6 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.