John French Sloan is high in key: pale, luminous, and filled with optical air. John French Sloan builds on cool foundations: the palette favours the blue-cyan-green arc. Chroma is held at a comfortable level - distinct colours, but no single hue is allowed to overwhelm. #6C4118 delivers the chromatic peak at only 2.1% - a small shot of colour with outsized visual impact. At 54 units across the value scale, the palette keeps contrast readable without letting it dominate. 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 John French Sloan's sequence - a single chapter in a chromatic story told across many works.