If you’ve ever designed something that looked perfect on screen but came back from the printer looking a little… off – you’re not alone. Colour is one of the most common areas of confusion when moving from digital to print, and it all comes down to how colour is created and displayed.

In this post, I’ll walk you through the basics – RGB vs CMYK vs PMS, what they’re used for, and why it’s totally normal (but avoidable!) for your colours to look different in print.

RGB – For Screens Only

RGB stands for Red, Green, and Blue. This colour mode is used for anything digital like your phone, computer screen, or digital designs. These colours are made with light, which is why they can appear super bright, vibrant, and even neon on screen.

The more light added, the brighter the colour. That’s why your Instagram tile might glow on your laptop but look dull when printed, it’s because RGB colours can’t be printed. Paper doesn’t emit light like screens do. Instead, it absorbs and reflects it.

CMYK – For Most Print Projects

CMYK stands for Cyan, Magenta, Yellow, and Key (Black). It’s the colour mode used for most print jobs like business cards, flyers, packaging and signage.

With CMYK, inks are layered on white paper to create colour. The downside? CMYK has a more limited range than RGB. This means colours like bright greens, purples, and oranges might not look the same when printed. Even the type of paper (e.g. matte vs glossy) can impact how colours appear.

That’s why I always recommend designing in CMYK when your final output is print. If a file is set up in RGB, it will be auto-converted to CMYK for printing and the shift can be noticeable.

PMS – For Colour Consistency Across Everything

PMS stands for Pantone Matching System, a universal standard used to ensure accurate colour matching across print jobs, products, and materials. PMS colours are pre-mixed inks (not layered like CMYK), which makes them ideal when you want a specific, consistent colour, like a brand red or a corporate blue.

PMS is often used for:

• Logo consistency across multiple print runs
• Promotional items (pens, T-shirts, bags)
• Spot colours that must always look the same

Even with PMS, the material can affect how the colour appears—but it’s still the most reliable way to maintain consistency.

So… Why Does It Look Different?

Here’s a quick recap:

• Screens use RGB (light)
• Print uses CMYK or PMS (ink)
• Some colours simply can’t be replicated exactly in print

That glowing coral pink you love online might not exist in the CMYK colour range. It’s not a mistake—it’s a colour mode limitation. But by planning ahead and designing in the right colour format, you can avoid surprises.

Common Questions I Get About Colour & Print

Why do my printed colours look duller than on screen?
Because screens use light and print uses ink—so RGB colours won’t always translate perfectly to CMYK.

Can you match my brand colours exactly?
Yes if you’re using PMS colours. If we’re working in CMYK, I’ll get as close as possible and tweak the setup based on your print specs.

What happens if I design in RGB and send it to print?
It’ll be converted to CMYK, which can cause unexpected shifts. That’s why I always check your file setup first.

What’s the best way to keep my colours consistent?
Chat to your designer (hello 👋) early on. I’ll make sure your files are set up correctly for their final use and guide you through PMS options if needed.

Why Experience Counts

At Little Genie, I’ve worked across both digital and print for years. I know how easy it is to miss the small things like colour modes and how frustrating it can be when a printed design doesn’t match what you expected.

That’s why I manage the full process carefully, check your file setup, and explain what you need to know (without overwhelming you). If it’s going on paper, signage, packaging, or a tote bag – I’ve got you.

Need Help With a Print-Ready Design?

Let’s bring your colours to life – on screen and in print.
Get in touch