O. Louis Guglielmi sits in the centre of the value range, lending the palette a sense of even, sustained light. Warm and cool are kept in productive tension, creating the kind of chromatic harmony that sustains the eye. Mid-range chroma keeps the palette grounded - colourful but not strident. The highest-chroma note - #ECCC24 - appears at just 4.6%, deployed as a precision accent against the quieter ground. At 57 units of value range, the palette has the tonal breadth to sustain complex spatial readings. The combination of mid-to-high key, balanced temperature, and elevated chroma is characteristic of Impressionist observation: light broken into its component hues. In the context of O. Louis Guglielmi's full range of palettes, group 5 represents one movement in an ongoing chromatic dialogue.