Roderic O'Conor is high-key - luminous, open, and weighted toward light. Roderic O'Conor builds on cool foundations: the palette favours the blue-cyan-green arc. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. #4B5332 functions as the palette's exclamation mark: highest chroma, lowest percentage (7.0%). At 66 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. This is palette 1 of Roderic O'Conor's sequence - a single chapter in a chromatic story told across many works.