The high-key values of Joseph Magnus Stack give it an effulgent, almost bleached quality. Temperature is cool-dominant, with blue and green families claiming the largest areas. Chroma is moderate: colours carry enough saturation to be read as colour, but the palette stops well short of garish intensity. #56AECD at 24.3% is both the most chromatic and one of the largest colours in the palette - chroma as mass rather than as highlight. Spanning 48 units on the value axis, the palette achieves the balance between tonal flatness and fragmentation. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is palette 1 of Joseph Magnus Stack's sequence - a single chapter in a chromatic story told across many works.