A plain-English guide to ambient lighting, high-CRI viewing, calibrated screens, and why we are investing thousands of pounds in controlled D50 (ISO 3664) colour environments across the entire studio.
Colour mistakes usually come from mixing two different issues. They sound similar — “the colour looks wrong” — but they are not the same thing, and each needs its own fix.
Office LEDs, shop windows, and mixed daylight all change how fabric looks. Side-by-side under the same poor light does not help — both pieces look equally wrong. True colour only appears under controlled D50 daylight-simulated, high-CRI lighting.
Laptops, phones, and office displays are usually too bright, too blue, or simply untuned. An uncalibrated screen is an estimate of the file — not a reliable colour proof.
Correct light on the real product and a calibrated display. Fixing only one still leaves you guessing.
Colour is not a fixed property of a product — it is what your eyes make of light reflecting off the fabric. Change the light, and the colour you see changes.
That is why the same jacket can look navy under office LEDs, charcoal under a shop window, and true brand-navy under controlled daylight-simulating light. Your brain quietly “corrects” for the room, so everything in that space can look believable — even when it is wrong.
Putting two garments next to each other under the same poor light does not reveal the truth: both will look equally incorrect. It is impossible to view the correct sample colour correctly unless you view it under D50, high-CRI daylight-simulated lighting.
Most workplaces, homes, and even many studios use lights chosen for brightness and energy cost — not for colour.
~3000 K · LOW CRI
Looks muddy brown
~6500 K · LOW CRI
Looks cold navy
5000 K · HIGH CRI
True charcoal grey
Illustrative only: the physical garment is identical in each panel. Only the light changed. Without a known standard such as D50, there is no shared “correct”.
CRI (Colour Rendering Index) scores how faithfully a light source reveals colours compared with a reference — daylight or a black-body radiator at the same colour temperature. A “bright white” light can still be terrible for colour if its spectrum has holes.
The everyday CRI number you see on a bulb pack is usually Ra — an average of eight pastel test colours (R1–R8). That average can look respectable while still failing on saturated colours that matter in fashion, packaging, cosmetics, and food.
Extended metrics look at R1–R15. The one clients notice most is R9 (strong red). Cheap LEDs often score poorly on R9 even when Ra is “OK”. Reds go flat, skin looks lifeless, brand reds shift, and warm woods or meats lose depth.
A colour reference chart — or a known brand sample — makes the problem obvious. Under poor light, patches that should stay distinct compress toward grey or shift hue. Under high-CRI D50-class light, separation and hue relationships hold.
Reds dull · greys warm · hues crowd together. Easy to approve the wrong correction.
~6500 K · LOW CRI
Reds dull · greys warm · hues crowd together. Easy to approve the wrong correction.
Red looks brownish / faded
Reds dull · greys warm · hues crowd together. Easy to approve the wrong correction.
Red looks brownish / faded
Same garment, same dye lot, same eyes — different light. Under poor light the “brand red” is simply not the brand red. Only D50 high-CRI viewing shows the true colour.
Even if the garment is lit correctly in the studio, what you see on a screen is a separate question. Soft-proofing only works when the display is calibrated and profiled — ideally to a known target, at a sensible brightness, in a controlled surround.
Approving imagery on a laptop in an open-plan office is not judging the file alone — you are judging the file plus that display plus that room.
It is not a final colour decision. “It looked fine on my monitor” is not a colour-management workflow.
Correct light on the garment does not make an uncalibrated laptop truthful. A calibrated monitor does not make a garment true under poor office LEDs. You need both.
Reds dull · greys warm · hues crowd together. Easy to approve the wrong correction.
~6500 K · LOW CRI
Miss either one and disagreements creep in: “the retouch looks different here”, “the sample doesn’t match the e-com hero”, “production says the print is off”. Often the file was fine — the viewing conditions were not shared.
We are making a significant investment so colour judgements in our space are made under consistent, industry-aligned conditions — not under whatever the ceiling happens to be.
We do not need to name fixtures for this to matter. What matters is the standard: D50 (5000 K) daylight simulation, high colour rendering, and environments designed for judgement — not just for illumination.
Across key studio areas — so everyday working light supports colour, instead of fighting it.
For critical assessment of products, proofs, and side-by-side comparisons under controlled D50.
So reds, skin, packaging, and saturated brand colours remain trustworthy.
When you review with us in the studio, we can put product, print, and soft proof under aligned conditions.
When you review remotely on an uncalibrated laptop under mixed office light, treat that as a directional check — and bring critical colour decisions back to controlled viewing whenever the brand depends on it.
Problem 1: do not judge garment colour under office or shop light. True sample colour only exists under controlled D50, high-CRI viewing.
Problem 2: do not approve final brand colour from an uncalibrated phone or laptop. Use remote screens for layout and content — not for hue-critical sign-off.
If colour is contractual, specify both conditions. D50/high-CRI booth for the product, plus a calibrated display for the file.
Ask about CRI and R9, not just “daylight bulbs”. Many “5000 K” lights still render colour poorly.
Talk to your Cliik Studios contact about product, print, and soft-proof review in an aligned colour environment.
Cliik Studios customer guide to colour viewing conditions. Diagrams are educational illustrations, not laboratory measurements of specific products. Standards referenced conceptually: D50 daylight (approximately 5000 K), CRI/CIE R1–R15, and graphic-arts viewing practice such as ISO 3664.
Cliik Studios Tell us about your project and we’ll make the process simple from start to finish.
Fields marked with an * are required
We’ll review your enquiry and get back to you as quickly as possible (usually the same day).
