Numerical Class
Color shade grouping organizes finished fabric rolls by color deviation using a three-digit designation. The 555 shade system represents a visual or instrumental assessment where each digit indicates a specific axis in three-dimensional color space. The middle digit represents the lightness dimension.
The outer digits represent the chromatic coordinates of the fabric lot.
Coordinate Grid
Position values determine the direction of color deviation from a central standard roll. In this structure, the first digit registers the red-green position while the second digit defines the yellow-blue position. The center point is always designated by a five.
This means that a fabric roll with a coordinate of fifty-five is a perfect match to the nominal target shade. Values of four or six show acceptable drift. A deviation beyond these values indicates a shade mismatch that requires physical separation in the cutting room.
Roll Matching
Cutting room layouts rely on consistent grouping to prevent panel shading in finished garments. When a mill ships a hundred rolls of fabric, the 555 shade system allows the factory to stack and cut rolls of the same code together. This grouping minimizes the risk of a garment having a sleeve that is lighter than the body.
The factory supervisor plans the lay according to these codes.
Sequence Control
Variations in dyestuff concentration or stenter temperature can cause shading differences across a single production run. Standard colorimeters measure each roll end to assign the three-digit code automatically before shipment. This ensures that the buyer receives fabric rolls sorted into uniform batches.
The system reduces sorting disputes.
