Gustav Klimt is high-key - luminous, open, and weighted toward light. The dominant temperature is warm, with earth tones and fire-hues setting the emotional key. Mid-range chroma keeps the palette grounded - colourful but not strident. The highest-chroma note - #E54039 - appears at just 9.2%, deployed as a precision accent against the quieter ground. The value range of 33 units sits in the comfortable middle: enough depth, enough light, neither extreme. This is palette 4 of Gustav Klimt's sequence - a single chapter in a chromatic story told across many works.