Values in Rudolf Ribarz tilt decisively toward white, giving the palette its luminous character. Cool tones set the register here - the blues and greens easily outweigh any warm accents. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. #D2CCBC claims 26.5% of the surface, functioning as the work's tonal foundation. The highest-chroma note - #433425 - appears at just 5.2%, deployed as a precision accent against the quieter ground. The full value range is 66 units: broad enough to build convincing three-dimensional form. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. This is the light Rudolf Ribarz preferred, made measurable.