Isaac Israels sits in the centre of the value range, lending the palette a sense of even, sustained light. Isaac Israels tilts toward cool - blues and silver-greys carry the structural weight. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. Only 5.5% is devoted to #B1806E, yet that small allocation delivers the palette's entire chromatic tension. The palette spans 44 value units: a measured range that delivers coherence over drama. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is palette 4 of Isaac Israels's sequence - a single chapter in a chromatic story told across many works.