Mid-key values give Rubens Santoro its characteristic quietness - nothing blazes, nothing disappears. Rubens Santoro builds on cool foundations: the palette favours the blue-cyan-green arc. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. The highest-chroma note - #B8813A - appears at just 6.7%, deployed as a precision accent against the quieter ground. Value range is moderate at 45 units - enough contrast for legibility, not so much as to fragment the tonal unity. 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 palette 3 of Rubens Santoro's sequence - a single chapter in a chromatic story told across many works.