Why So Many Banks and Tech Brands Choose Blue

Why We Look · 3 November 2026 · Reviewed by Faisal Zaidi

Finance and technology are often described as blue. Four studies of cars, patterns, product designs and logos suggest a category colour can work as the category's own face, easy to read and easy to like, with distinctiveness left to other cues.

Answer to the question

Blue color psychology: why do banks use blue?

Blue color psychology is usually explained by calm and trust, but the studies behind this article point to a second reason. In design research, people tend to like what is typical of a category because it is quick to process, so a colour many rivals share can read as the category's own. Fitting in helps; standing out needs something else.

Key takeaways

Jan Landwehr and two co-authors (2011) scored 28 popular car designs by their distance from a morphed average. Adding the score improved sales forecasts by up to 19 per cent, for economy and premium cars alike.
Piotr Winkielman and colleagues (2006) found that more prototypical patterns were categorised faster and rated more attractive, and that speed explained much, though not all, of the link.
Paul Hekkert and two co-authors (2003) found that typicality and novelty each masked the other in studies of consumer products. People preferred novel designs provided they stayed typical, and the best-liked products combined both.
Paul Bottomley and a co-author (2006) found in two experiments that colours matching a product's type, or a brand's known positioning, were judged more appropriate for its logo.
None of these studies counted how many firms use blue, so the link from typicality to a category colour is our interpretation.

Blue color psychology usually answers for finance and technology with trust. Four studies from 2003 to 2011 suggest a second reason: a shared colour becomes a category's face.

Finance and technology are often described as blue, and the common explanation is that blue signals trust and competence. What the colour itself does to a mind is taken up in Why Brands Reach for Blue and sits in the background here. The research that bears on this question concerns shapes, patterns, logos and car fronts rather than palettes, and none of it counted how many finance or technology firms use blue.

What the studies supply is a way to think about why a category might settle on one colour that is easy to read and easy to like, and about what a single brand gains or gives up by joining it.

Blue Color Psychology and the Pull of the Average

Twenty-eight popular car models were photographed from the front and morphed into a single average design. Each real car was then scored by how far it sat from that average, and in 2011 Jan Landwehr and two co-authors added the score to a sales-forecasting model. Forecast accuracy improved by up to 19 per cent, and the effect held for economy and premium cars alike. A design that resembles the rest of its category can earn a warm reaction before anyone has formed an opinion.

The mechanism behind a result like that was tested more simply by Piotr Winkielman and colleagues in 2006. People tend to find average members of a category attractive, a pattern called beauty in averageness, and one common explanation is that averageness signals a good mate. The team proposed something plainer: prototypes are processed fluently, and fluent processing feels good.

In their first two experiments, participants categorised and rated the attractiveness of random-dot patterns and then geometric patterns that varied in how prototypical they were. The more prototypical a pattern, the faster it was categorised and the more attractive it was rated. Speed accounted for much of the link between prototypicality and attractiveness, though not all of it, and the result held even when people were not asked to think about category membership. In a third experiment, recordings of facial muscle activity showed quick positive reactions to abstract prototypes.

Set beside the car forecasts, the pattern is consistent: what resembles its category is quick to recognise, and quickness is felt as liking. Carrying that over to colour is our extension, since neither study used colours. If it holds, blue color psychology in a crowded category may owe part of its pull to ease rather than to meaning. A category whose members mostly share a colour has made that colour part of what the category looks like, and a newcomer in the same colour is read at once.

Why Fitting In Is Not Enough

Fitting in has a price. Three studies of consumer products, reported in 2003 by Paul Hekkert and two co-authors, put a measure on it. Typicality and novelty were about equally good predictors of preference, but the two qualities worked against each other: a typical product is rarely novel, and each quality masked the effect of the other. The direct links between either quality and preference were not significant, and became significant only when the other quality was held constant. People preferred novel designs, provided the novelty did not cost the design its typicality, and the most preferred products combined both. The expertise of the observers did not change how much novelty counted.

A palette is a small part of a design, and the same logic would apply to it if colour behaves like other features. A brand in the category colour buys typicality at once. Any novelty has to come from somewhere else, such as shade, shape, layout, motion or the pairing of colours, and the studies do not say which of these carries it. Novelty also has a memory payoff, which Why the Odd One Out Gets Remembered examines. For blue color psychology, the choice of blue settles one of the two qualities and leaves the other open.

Distinctiveness Has to Come From Elsewhere

A related argument comes from marketing rather than psychology. In How Brands Grow, Byron Sharp separates differentiation, a reason to prefer a brand, from distinctiveness, a means of being identified, and argues that brands should build the second: colours, shapes and other cues that identify the brand without carrying a message. He also states a regularity he calls the law of prototypicality, under which attributes that describe the category score higher than less typical ones. One practical point sits beside the argument, and Who Owns a Brand Colour treats the ownership side at length: a colour that identifies a brand can be registered as a trademark, where a claim of benefit can simply be copied.

Read with the experiments above, the book places the work of standing out on cues that the whole category does not share. Blue color psychology then becomes a question about the starting point, not the finish. Questions a team can ask about its own category:

Which colour do the closest rivals share, and how quickly do buyers recognise the category in it?
What does the colour need to say about this brand's job, and does the category colour say it?
Where will novelty come from if the colour is shared: shade, shape, layout, sound or motion?
Which cue could the brand repeat until buyers attribute it to the brand alone?
What can be tested with real buyers, given that the studies here measured ratings and forecasts, not choices of palette?

How Buyers Judge a Colour's Fit

Fit has also been tested directly, with logos. In two experiments reported in 2006 by Paul Bottomley and a co-author, colours that matched a product's type were judged more appropriate for its logo. When people knew how a brand was trying to position itself, they judged colours that suited that position as more appropriate. The second experiment used red and blue across brands described as functional, sensory-social or both. The authors argued that a suitably chosen colour can add value to a name or logo even without prior conditioning.

Fit here is a judgement about the match between a colour and what a brand sells or wants to be. It sits alongside the typicality results without duplicating them: one asks whether a colour resembles the category, the other whether it suits the brand's job. For a bank or a software firm weighing blue color psychology, the two questions may share an answer, and the studies described here do not pull them apart.

The studies point to a loop, though none followed a market over time. Buyers reward resemblance, newcomers resemble the incumbents, and the resemblance hardens into the category's look. Why any one firm made its choice is a separate question that these experiments cannot settle.

Common questions

Blue color psychology: why do banks use blue?

Blue color psychology offers two partial answers. The familiar one links blue with calm and trust, and the studies discussed here do not test it. The other comes from design research: people tend to like what is typical of a category because it is quick to process, so a colour many rivals share can come to read as the category's own. The research does not establish why any firm chose its palette.

Does blue color psychology make customers trust a brand?

Not on the studies discussed here, which did not measure trust. Paul Bottomley and a co-author found in two experiments that colours matching a product's type were judged more appropriate for its logo. Appropriateness is a judgement of fit, not a measure of trust or of purchase.

Should a brand in a blue category choose another colour?

Within blue color psychology the research gives no rule. Paul Hekkert and colleagues found that people preferred novel product designs as long as novelty did not cost the design its typicality, and that the best-liked products combined both. A brand can take the category colour and look for novelty in other parts of its identity, or depart from the colour and give up some ease of recognition. Testing with real buyers is the way to learn which trade suits a given category.

Sources

Sharp, B. How Brands Grow. Seed book; vault hub Books/How Brands Grow.

Landwehr, J. R., Labroo, A. A., & Herrmann, A. (2011). “Gut Liking for the Ordinary: Incorporating Design Fluency Improves Automobile Sales Forecasts.” Marketing Science, 30(3), 416-429. doi:10.1287/mksc.1110.0633 https://doi.org/10.1287/mksc.1110.0633

Winkielman, P., Halberstadt, J., Fazendeiro, T., & Catty, S. (2006). “Prototypes Are Attractive Because They Are Easy on the Mind.” Psychological Science, 17(9), 799-806. doi:10.1111/j.1467-9280.2006.01785.x https://doi.org/10.1111/j.1467-9280.2006.01785.x

Hekkert, P., Snelders, D., & van Wieringen, P. C. W. (2003). “Most advanced, yet acceptable: Typicality and novelty as joint predictors of aesthetic preference in industrial design.” British Journal of Psychology, 94(1), 111-124. doi:10.1348/000712603762842147 https://doi.org/10.1348/000712603762842147

Bottomley, P. A., & Doyle, J. R. (2006). “The interactive effects of colors and products on perceptions of brand logo appropriateness.” Marketing Theory, 6(1), 63-83. doi:10.1177/1470593106061263 https://doi.org/10.1177/1470593106061263