The value structure of Carl Rungius is mid-key: quiet, controlled, and cohesive. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. All colours lean toward grey, building depth through value rather than colour punch. #897543 functions as the palette's exclamation mark: highest chroma, lowest percentage (4.0%). At 54 units across the value scale, the palette keeps contrast readable without letting it dominate. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is palette 1 of Carl Rungius's sequence - a single chapter in a chromatic story told across many works.