RGB vs CMYK for DTF Printing: Which Should You Use for Brandum Artwork?

1. Why colour spaces matter for DTF & custom clothing

Every week someone sends us one of these messages:

• “My blue looks more purple on the hoodie.”
• “The neon green from my design looks a bit flatter in print.”
• “The brand red doesn’t match the brochure I had printed.”

Most of the time, the problem isn’t the printer or the ink. It’s that:

• The artwork was built in the wrong colour space for the job, or
• It was exported without thinking about DTF and fabric at all.

Once you understand what RGB and CMYK actually are, setting files up properly becomes much easier.

2. What is RGB?

RGB stands for Red, Green, Blue. It’s the colour space your phone, laptop and TV live in.

In simple terms:

• RGB is a light-based model (additive colour)
• When all three are at full blast, you get white light
• When they’re all at zero, you get black

It’s perfect for anything that lives on a screen: websites, social media, video, digital art and mock-ups.

There are different flavours of RGB (like sRGB, Adobe RGB, Display P3, etc.). For most people designing for print, sRGB is the safest and most predictable option – and it’s what we ask for in our own artwork specs for DTF transfers. :contentReference[oaicite:0]{index=0}

3. What is CMYK?

CMYK stands for Cyan, Magenta, Yellow and Key (Black). This is the classic print-world colour space used for magazines, flyers, packaging and most traditional litho printing.

In simple terms:

• CMYK is an ink-based model (subtractive colour)
• You start with white paper and add inks that absorb light
• The more ink you pile on, the darker things get

Traditional printers will often ask for CMYK PDFs because their presses are literally laying those four inks down. If you’ve ever had a brochure or business card printed, that was almost certainly handled in CMYK.

4. Why screens and prints never match exactly

Even if you do everything “right”, your hoodie will never look exactly like your phone screen. There are a few reasons:

• Different gamuts: RGB (on a bright monitor) can show colours that CMYK inks and DTF inks simply can’t reproduce 1:1.
• Backlit vs reflected light: Your phone is literally a light source. A hoodie is a piece of fabric reflecting whatever light is in the room.
• Fabric and finish: Ink on smooth paper behaves differently to DTF ink and adhesive on cotton, fleece or polyester.
• Screen settings: Every screen is calibrated differently. Many phones are set to “vivid” by default.

The goal is not “perfect match in all conditions” – that doesn’t exist. The goal is predictable, consistent colour that looks good on real garments.

5. What we recommend for DTF artwork with Brandum

This is the part most people read first, so I’ll be very clear. For DTF transfers and most custom clothing work at Brandum, we recommend:

5.1 Why we prefer sRGB for DTF at Brandum

We run colour-managed workflows on our side. Working in sRGB gives us:

• A predictable starting point (most devices and browsers are built around sRGB)
• Less risk of weird surprises when you save/export from tools like Canva, Procreate or Photoshop
• Cleaner hand-off into our RIP and DTF print profiles

If you try to micro-manage the CMYK conversion yourself without a calibrated setup, you often make things worse, not better. Better to give us a clean sRGB file and let us handle the profiling at print stage.

5.2 What about my brand colours and Pantones?

If your brand colours are critical, tell us:

• Your sRGB or HEX values, and/or
• Any Pantone references you use for print

We already ask for this on other pages, like our T-shirt Printing London guide, where we say: “Colour: sRGB; include any Pantone references for screen/embroidery.” :contentReference[oaicite:2]{index=2}

We can’t break the laws of physics – neons and some bright blues/greens will always shift when they hit ink and fabric – but we can aim for the closest, most consistent result possible.

5.3 When you might send CMYK anyway

There are a couple of times CMYK artwork is still useful:

• You’ve had print materials (brochures, packaging, etc.) professionally done in CMYK and you want us to match that look as closely as possible.
• You’re working with a designer who has already supplied a clean CMYK PDF for print and you want to keep everything as one master file.

In those cases, send the CMYK file as well, but please still send an sRGB PNG or proof image so we can see what you’re expecting on screen.

6. When CMYK really matters (and when it doesn’t)

There’s a lot of noise online about “always convert to CMYK for print”. That’s true in some situations and misleading in others.

For most Brandum customers sending us artwork for DTF transfers or custom garments, getting the RGB file right is far more important than trying to manually set CMYK values.

7. Common colour issues & how to avoid them

Here are the problems we see most often, and the fixes that usually sort them.

7.1 Neon and super-bright colours looking dull

Neon screensavers and super-vivid RGB greens and blues simply don’t exist in the same way in ink. DTF inks are bright, but they’re not LED lights.

How to fix:

• Avoid relying on pure “glowing” neon shades as the whole design
• Test a small run and adjust your palette towards slightly more “print-friendly” colours
• Consider thicker outlines or bolder shapes to keep things readable even if the colour isn’t electric

7.2 Brand red doesn’t match the brochure

Your brochure was likely printed in CMYK, possibly with a dedicated spot colour. Your hoodie is being printed with DTF inks on fabric. They’re different worlds.

How to fix:

• Send us the Pantone or CMYK values used on the brochure as a reference
• Send an sRGB/HEX version of your brand colour as well
• Be prepared for a small tolerance – aim for “visually consistent”, not mathematically identical

7.3 Blacks look washed out

On screen, you might be using a slightly grey “soft black” so text is easier to read. On a garment, that can look a bit flat.

How to fix:

• Use a strong, rich black in your artwork for large areas
• Keep text legible with contrast (white on black or black on a light colour)
• Avoid massive solid blocks of black if you want a lighter feel to the garment

7.4 Colours shifting when exported from design apps

Tools like Canva, Procreate and even Photoshop love to make decisions for you when you hit “Export”. Sometimes that includes quietly changing colour profiles.

How to fix:

• Make sure your document is set to sRGB from the start
• Export at 300 DPI and full size (no sneaky compression)
• Save as PNG or PDF and avoid re-saving through other random apps afterwards

8. Where to go next (for Brandum customers)

If you’re sending artwork to us for the first time, here’s a simple way to put all this into action.

1. Set your document to sRGB, 300 DPI at the size you want printed.
2. Build your design, keeping lines and text sensible (no hairline strokes).
3. Export a PNG or PDF with a transparent background if needed.
4. Send it with a quick note:
   • What garments it’s for (T-shirts, hoodies, workwear, sportswear)
   • How big you want it on the garment
   • Any brand colour references (HEX, sRGB, Pantone)