Georg Tappert occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. Colours are neither washed out nor blazing; they occupy the productive middle ground of the chroma scale. At 9.0%, #B9A348 carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. Spanning 44 units on the value axis, the palette achieves the balance between tonal flatness and fragmentation. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. In the context of Georg Tappert's full range of palettes, group 4 represents one movement in an ongoing chromatic dialogue.