Printing Planet UK
The same design printed onto a white T-shirt and a black T-shirt using DTG will not look identical. The process is different, the cost is higher for dark garments, and the print has a different feel underhand. Understanding why helps you choose the right garment colour for your design.
Why Light Garments Are Straightforward
On white and pale garments, DTG ink is applied directly to the fabric. The white of the fabric acts as the background. Colours appear clean and vibrant because there is nothing underneath competing with the ink.
There is no pre-treatment visible after washing, the print is thin and breathable, and the result on a quality cotton garment is close to what you would see on paper.
Why Dark Garments Need a White Underbase
On black, navy, red or other dark fabrics, the garment colour would bleed through any ink laid directly on top. A blue ink on a black shirt would be invisible.
To solve this, DTG printers lay down a white ink underbase first. This is a thick layer of white ink covering the full print area. The coloured design is then printed on top of the white underbase.
This changes several things:
The hand feel is heavier. The underbase adds a layer of thickness that is noticeable when you touch the print. It does not feel like a screenprint or a transfer, but it is more substantial than a light garment DTG print.
The print needs to be pressed. After printing, the garment goes through a heat press or conveyor dryer to cure the white underbase and the colour layer. This pressing step is essential and part of the standard process.
Colours may appear slightly different. The white underbase is not perfectly opaque. Very dark or saturated colours in your design may appear marginally different than on screen. A professional shop will show you a test print before running your full order if colour accuracy is critical.
The cost is higher. Dark garment DTG printing uses significantly more ink than light garment printing. Most shops charge a premium of £2 to £5 per piece on dark garments.
When Dark Garments Are Worth It
Dark garments are the right choice when the garment aesthetic matters more than keeping costs low. A black hoodie with a full-colour chest print looks premium. A navy polo with a logo on a white underbase looks clean and professional.
For designs with white elements, dark garments are actually required. A white logo design is invisible on a white T-shirt without a dark garment to create contrast.
The Alternative: DTF Printing on Dark Garments
DTF (direct to film) printing handles dark fabrics without the same limitations. The design is printed onto a transfer film with its own white layer built in, then heat-pressed onto the garment. The result is similar to dark garment DTG but without the pre-treatment step.
DTF is often faster and slightly cheaper than dark garment DTG for small quantities. It also works on polyester and blended fabrics where DTG struggles. For more on how DTF compares, read our DTG vs DTF printing guide.
For pricing on both methods, visit our DTG service page or DTF service page.