Dorothy Lathrop sits in the centre of the value range, lending the palette a sense of even, sustained light. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. The highest-chroma note - #7E7739 - appears at just 4.7%, deployed as a precision accent against the quieter ground. 39 units of value spread create a palette that is varied but unified - contrast in the service of harmony. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. In the context of Dorothy Lathrop's full range of palettes, group 3 represents one movement in an ongoing chromatic dialogue.