Karl Heinrich Jaeckel occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Warm and cool are kept in productive tension, creating the kind of chromatic harmony that sustains the eye. Chroma is held at a comfortable level - distinct colours, but no single hue is allowed to overwhelm. The highest-chroma note - #C7984F - appears at just 11.3%, deployed as a precision accent against the quieter ground. 55 units of value range underpin the palette's structural clarity: the eye always knows where light falls. Together these qualities point to the open-air Impressionist method: recording light rather than local colour. This is palette 5 of Karl Heinrich Jaeckel's sequence - a single chapter in a chromatic story told across many works.