Mid-key values give Mikalojus Konstantinas Ciurlionis its characteristic quietness - nothing blazes, nothing disappears. Temperature is cool-dominant, with blue and green families claiming the largest areas. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. Only 7.7% is devoted to #6BA379, yet that small allocation delivers the palette's entire chromatic tension. The value range of 36 units sits in the comfortable middle: enough depth, enough light, neither extreme. 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 13 of Mikalojus Konstantinas Ciurlionis's sequence - a single chapter in a chromatic story told across many works.