Why Garment Color Changes Your DTF Workflow
The single biggest difference between printing on a white tee and a black hoodie is the white ink underbase. Direct-to-Film uses white ink as a blocking layer so your CMYK colors stay vivid instead of mixing into the garment. Get this wrong and dark shirts come out dull or the transfer cracks. Stock the right DTF PET film and DTF ink so both workflows run cleanly.
Printing on Light Garments
On white or pastel fabrics, you can often print with little or no white underbase — the CMYK layer sits directly on the film and reads bright. This saves white ink, speeds production, and gives a softer hand. For very light pastels, a thin white layer can improve color accuracy, but it is optional.
Printing on Dark Garments
Dark and saturated colors require a full white underbase printed first, then the CMYK image on top. The white layer must be opaque enough to block the garment color completely; otherwise reds look maroon and blues look navy. This is why quality white DTF ink and a well-tuned printer profile matter.
Setting White Ink Opacity
| Garment | White underbase | Notes |
|---|---|---|
| White / pastel | None or thin | Save ink; brighter CMYK |
| Light gray / beige | Thin to medium | Test for color shift |
| Black / navy / red | Full, opaque | Block garment fully; raise density if dull |
Common Problems & Fixes
- Dull colors on dark shirts: white density too low — increase white ink percentage in the RIP profile.
- White showing at edges: over-sized underbase or mis-registration — tighten the profile margins.
- Cracking on stretch: pair dark prints with a flexible hot melt powder and a medium heat press setting.
Bulk Printing Tips
Standardize by grouping orders: run all light-garment jobs with a low-white profile, then switch to the full-underbase profile for dark batches. This keeps ink usage predictable and reduces misprints.
Get Wholesale DTF Supplies
We manufacture DTF PET film, CMYK + white DTF ink and hot melt powder for print shops and factories. Orders ship DDP with an MOQ from 50 pcs / 20 rolls. Request a quote for factory-direct pricing.