Jacques d'Arthois occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Jacques d'Arthois keeps warm and cool in parity, a balance that lends the work a perceptual shimmer. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. Only 4.3% is devoted to #DAB85D, yet that small allocation delivers the palette's entire chromatic tension. Value range is moderate at 52 units - enough contrast for legibility, not so much as to fragment the tonal unity. In the context of Jacques d'Arthois's full range of palettes, group 4 represents one movement in an ongoing chromatic dialogue.