The value structure of Dr. Atl is mid-key: quiet, controlled, and cohesive. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. Dr. Atl gives 26.6% of the composition to a single #202023 - a decisive chromatic anchor. #90ACC5 delivers the chromatic peak at only 8.6% - a small shot of colour with outsized visual impact. From deepest dark to palest light, the palette traverses 69 units of the value scale - a span that creates natural depth. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. In the context of Dr. Atl's full range of palettes, group 1 represents one movement in an ongoing chromatic dialogue.