Low-key values are the structural spine of Paul Trouillebert, giving it gravity and atmosphere. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. All colours lean toward grey, building depth through value rather than colour punch. #181718 at 32.5% of the palette: an overwhelming presence that pulls all other colours into its gravitational field. #6F5435 functions as the palette's exclamation mark: highest chroma, lowest percentage (2.9%). 69 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 6 sits within the larger chromatic argument that Paul Trouillebert's complete body of work advances.