Low-key values are the structural spine of Joseph Highmore, giving it gravity and atmosphere. The dominant temperature is warm, with earth tones and fire-hues setting the emotional key. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. Joseph Highmore gives 34.9% of the composition to a single #050303 - a decisive chromatic anchor. The highest-chroma note - #5E3E17 - appears at just 2.9%, deployed as a precision accent against the quieter ground. At 70 units of value range, the palette has the tonal breadth to sustain complex spatial readings. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. Joseph Highmore's palette 3 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.