Ivan Shishkin occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Ivan Shishkin tilts toward cool - blues and silver-greys carry the structural weight. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. #637940 delivers the chromatic peak at only 6.4% - a small shot of colour with outsized visual impact. The value range spans 57 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Palette 15 sits within the larger chromatic argument that Ivan Shishkin's complete body of work advances.