Learn Dye Lot Variations

Understand dye lot variations and avoid dye lot variations. At TWOPAGES you can not only buy drapery but also learn about fabrics!

What are Dye Lot Variations?

Dye lot variations are slight differences in color between production runs of the same style of item. Dye lots are batches of textiles or fibers that are dyed in the same vat at the same time. No two batches of yarn are exactly the same. Even lots that are done right after the other will have slight differences in the  final color. Yarn is much the same way.  If the yarn base is different (from a different sheep, processed slightly differently) you will get different color results even in the same dyeing process.

Dye lot variations can be caused by:

  • Temperature
  • Water quality
  • Dye composition
  • Length of the dyeing process
  • Color Recipe

  • Quantity of shades added to the dye bath
  • Time
  • Pigment ratios
  • Barometric pressure
  • Flow of the fabric

  • Chemical concentrations
  • Molecular fiber structure
  • Chemical concentrations
  • Molecular fiber structure

Dye Lot Variations Between Sample and Drapery

Dye Lot Variations Caused by Different Orders


We will strictly control every link in the production process to reduce dye lot variations. To ensure a consistent color in a finished drapery, the factory will try best to use yarn that comes from the same dye lot.
We will make sure that the fabrics for an order are from the same batch to ensure that the same order is delivered to the customer with as little variation as possible.
We will strictly match the color of the fabric according to the color card to reduce the color difference with the original fabric color.


Try ordering drapery that "work together" in one order.  For example, the curtains for a window should be in an order.
In order to avoid Dye Lot Variations under different lights after you receive the products. Be sure to use D65 or daylight near noon to check the color.
*D65 is a CIE standard illuminant that represents a daylight color temperature of 6,500 degrees Kelvin. This corresponds to daylight near noon. D65 is the most commonly used daylight illuminant.

*Purchasing curtains in different orders or at different times will increase the probability of dye lot variations. Even over time, curtains purchased at the same time will have slight color differences due to some factors.

We hope that every customer who orders from TWOPAGES will receive satisfactory products!