Light floods Piet Mondrian; the palette keeps values pale and airy across its range. Temperature is cool-dominant, with blue and green families claiming the largest areas. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. The dominant colour, #FBFCFD, takes 32.2% of the total area, establishing the overall mood before any other hue is introduced. #D21831 delivers the chromatic peak at only 1.3% - a small shot of colour with outsized visual impact. The full value range is 85 units: broad enough to build convincing three-dimensional form. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. In the context of Piet Mondrian's full range of palettes, group 3 represents one movement in an ongoing chromatic dialogue.