Why do printed colours look different from my screen?

Short answer: a monitor produces light, while a print reflects it. They use different colour systems, have different colour ranges and respond differently to lighting. A screen image and a physical print therefore cannot be expected to look identical in every condition.

Why the difference happens

1. Screens use emitted red, green and blue light (RGB). Printers build colour with inks on a particular material, usually with CMYK or additional ink channels. Some bright screen colours are outside the range a particular printer and material can reproduce.

2. A screen can be too bright or incorrectly calibrated. A very bright display makes photographs look more luminous than a reflective print can appear.

3. Paper, vinyl, canvas and other materials each have their own white point, texture and ink response. A colour may look different on two materials, even from the same printer.

4. Viewing light matters. Daylight, warm indoor light and LED lighting can change the appearance of the same print. Two inks that match under one light may not match under another, an effect called metamerism.

How to obtain a closer match

• Use a correctly calibrated and profiled monitor with a sensible brightness setting.

• Ask which colour profile and file format your print provider recommends.

• If exact appearance matters, request a physical proof on the final material and view it under the lighting in which it will be displayed.

• Specify critical brand colours at the enquiry stage. Some shades simply cannot be reproduced on a chosen printer and material combination, so discuss acceptable alternatives before production.

Do I need to convert every file to CMYK?

No. A good colour-managed print workflow can accept suitable RGB artwork and convert it using profiles for the actual output device and media. Converting to a generic CMYK space too early can unnecessarily restrict colour. Always follow the specifications for the print process you are using.

Bottom line

A close and repeatable screen-to-print match is achievable, but an exact match under all lighting conditions is not. If colour is commercially important, a physical proof is the sensible reference.

Hudson Display Services provides independent help with wide-format colour management, artwork preparation and selected print work. Get in touch if a particular colour or file is proving troublesome.