Joseph Bail works almost entirely in the lower half of the value scale, privileging depth over brilliance. Joseph Bail builds on cool foundations: the palette favours the blue-cyan-green arc. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. 35.2% of the palette belongs to #171510, a concentration that makes it the unmistakable visual centre. The highest-chroma note - #4F341A - appears at just 5.7%, deployed as a precision accent against the quieter ground. 62 units of value range underpin the palette's structural clarity: the eye always knows where light falls. This tonal restraint is characteristic of the Joseph Bail approach: colour serves light, not the reverse. This is palette 4 of Joseph Bail's sequence - a single chapter in a chromatic story told across many works.