Mid-key values give Gerrit Berckheyde its characteristic quietness - nothing blazes, nothing disappears. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. #C3A57C functions as the palette's exclamation mark: highest chroma, lowest percentage (8.0%). A value spread of 60 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is the light Gerrit Berckheyde preferred, made measurable.