Our fabric type varies in characteristics, while most of our tees are made with our cotton + modal fabric, some of our tees (like our oversized fit tees) are made with 100% cotton. Fabric content, weight & the way it's knit all play factors in how each tee absorbs the dye. Additionally, no fabric production run is exactly the same. Even slight variances between runs can cause the fabric to absorb dye differently and result in slight shade differences. Every fabrication requires a unique dye formulation to hit the same color tone, and even then, some variance is to be expected. To ensure that colors across dye batches are consistent, our dye house has a color library exclusive to Dolkii which they use to color match as closely as possible for consistency.