The high-key values of Ilya Repin give it an effulgent, almost bleached quality. 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. At 26.3%, #CFD4BA functions less as a colour accent and more as a complete atmospheric environment. #1B222F delivers the chromatic peak at only 4.1% - a small shot of colour with outsized visual impact. At 61 units of value range, the palette has the tonal breadth to sustain complex spatial readings. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. Palette 4 sits within the larger chromatic argument that Ilya Repin's complete body of work advances.