Thomas Gainsborough occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Thomas Gainsborough builds on cool foundations: the palette favours the blue-cyan-green arc. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. Only 9.1% is devoted to #6E4E34, yet that small allocation delivers the palette's entire chromatic tension. 70 units of value range underpin the palette's structural clarity: the eye always knows where light falls. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Thomas Gainsborough's palette 3 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.