Mid-key values give Maurice Poirson its characteristic quietness - nothing blazes, nothing disappears. Temperature is cool-dominant, with blue and green families claiming the largest areas. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. #85A8C8 delivers the chromatic peak at only 10.5% - a small shot of colour with outsized visual impact. 56 units of value range underpin the palette's structural clarity: the eye always knows where light falls. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. This is palette 1 of Maurice Poirson's sequence - a single chapter in a chromatic story told across many works.