The Screen Is Optimistic, the Press Is Honest: A Print Colour Sign-Off for UK Brands
Photo: Unknown artistUnknown artist, Public domain, via Wikimedia Commons
Your brand blue looks certain on a laptop. It is vivid, clean, maybe a little electric. Then the leaflets arrive and the same blue is a tired lavender, the logo looks dusty, and the whole piece feels cheaper than the file did. Nothing dramatic has gone wrong. The printer has not swapped your ink for a different one. You have crossed from emitted light to reflected ink, and the two do not speak the same language.
That is not a reason to give up on colour. It is a reason to stop signing off print on a screen and start asking for the right kind of proof.
RGB is light. CMYK is ink.
Your screen makes colour with light. Print makes colour with ink on paper, and the paper reflects light back to your eye. RGB has a wider gamut, especially in saturated blues, greens and oranges. CMYK is a smaller box. A deep royal blue that looks rich on screen may need more magenta and less cyan on paper, which can push it toward purple. A bright lime green may go olive. A hot coral may soften into something closer to salmon.
This is not a printer being difficult. It is physics plus ink chemistry. Good artwork conversion helps, but it cannot create a colour the press cannot reach. If a brand colour sits outside the CMYK gamut, the honest aim is a controlled, repeatable compromise, not a perfect match.
Spot colour is not a magic wand on short runs
A spot colour, often a Pantone ink, is pre-mixed and printed with its own plate. On a long litho run it can be brilliant and consistent. On a short digital run of 250 leaflets, it may be simulated in CMYK, cost more than the job, or not be available at all. Ask what your printer can actually do with your quantity and stock. If the exact logo colour is non-negotiable, a spot ink might be worth it on a large run. On a small run, a well-managed CMYK build is often the practical answer.
Paper and finish change the colour
Ink does not sit on a neutral surface. Uncoated stock drinks ink and can soften edges and mute brightness. Coated stock holds detail and can look sharper and brighter. Silk sits somewhere between. A bright white sheet lifts colour; a cream or recycled stock adds warmth and can make blues look greener or greyer. Lamination can add gloss or warmth. Soft-touch finishes can mute contrast. Banner vinyl behaves differently again, and so does packaging board.
The same CMYK numbers are not a promise across materials. If the colour has to work on a leaflet, a banner and a box, each surface needs its own conversation.
A PDF on a phone is not a proof
A PDF preview is a useful layout check. It is not a colour proof. Your monitor is backlit, uncalibrated and probably set to a cheerful brightness. The PDF may also be showing RGB values that the printer will convert later. Ask for a physical proof on the actual stock, or at least a printed sample of the same job on the same material. View it in daylight, not under office LEDs. Compare it against a physical swatch, not your memory of the screen.
If exact colour is critical, ask for a contract proof. It costs money, but it is cheaper than reprinting 5,000 leaflets that make your brand look ill.
A simple colour sign-off routine
- Decide what must be exact. Is it the logo, a key brand block, or the overall mood? Not every colour needs the same level of control.
- Ask the printer which stock, finish and colour profile they will use.
- Request a physical proof on that stock, or a printed sample from a previous run.
- View the proof in daylight, with your brand swatch beside it.
- Note what is acceptable and what is not. 'A bit duller' is not a sign-off; 'the blue may shift slightly cooler, but the logo must stay deep' is.
- Sign and keep an approved copy. Ask the printer to keep it on file for the next run.
Questions to ask before you approve a print run
- Which stock and finish will you use?
- Will this be printed in CMYK or with a spot colour?
- Can I see a physical proof on the actual stock?
- Which colour profile are you using for the conversion?
- How much colour variation is normal between runs?
- What does a reprint cost if the colour is wrong?
- Can you keep my approved sample on file for next time?
Colour is a negotiation between brand, budget and material. The goal is not to match the screen perfectly. The goal is to make the result predictable, repeatable and close enough that nobody in the meeting says, 'That is not our blue.'
