The value structure of Jean-Charles Langlois is mid-key: quiet, controlled, and cohesive. Jean-Charles Langlois builds on cool foundations: the palette favours the blue-cyan-green arc. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. At 6.0%, #FEFEFD carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. The value range spans 71 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. 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 Jean-Charles Langlois's sequence - a single chapter in a chromatic story told across many works.