Why Is Facebook Blue? The Science Behind Colors In Marketing

Turns out, something as simple as tweaking the color of a button changes user behavior or endears people to your product. Buffer's Leo Widrich explains the importance of color in website and brand design.

Editor's Note: This is one of the most-read leadership articles of 2013. Click here to see the full list.

Why is Facebook blue? According to The New Yorker, the reason is simple. It’s because Mark Zuckerberg is red-green color blind; blue is the color Mark can see the best.

Not highly scientific, right? That may not be the case for Facebook, but there are some amazing examples of how colors actually affect our purchasing decisions. After all, sight is the strongest developed sense in most human beings. It’s only natural that 90% of an assessment for trying out a product is made by color alone.

So how do colors really affect us, and what is the science of colors in marketing, really? As we strive to make improvements to our product at Buffer, studying this phenomenon is key. Let’s dig into some of the latest, most interesting research on it.

First: Can you recognize the online brands just based on color?

Before we dive into the research, here are some awesome experiments that show you how powerful color alone really is. Based on just the colors of the buttons, can you guess which company belongs to each of them?

Example 1 (easy):

Example 2 (easy):

Example 3 (medium):

Example 4 (hard):

These awesome examples from YouTube designer Marc Hemeon, I think, show the real power of color more than any study could.

How many were you able to guess? (All the answers are at the bottom of this post!)

Which colors trigger which feeling for us?

Being completely conscious about what color triggers us to think in which way isn’t always obvious. The Logo Company has come up with an amazing breakdown that shows which colors are best for which companies and why. Here are 4 great examples:




Clearly, every one of these companies is seeking to trigger a very specific emotion:

When we feel compelled to buy something, color can play a major role. Analytics company KISSmetrics created an amazing infographic on the science of how colors affect our purchases.

Green stands out to me as the most relaxing color we can use to make buying easier. We didn’t intentionally choose this as the main color for Buffer--although it seems to have worked very well so far.

At second look, I also realized how frequently black is used for luxury products. Here is the full infographic:

How to improve your marketing with better use of colors:

This all might be fairly entertaining, but what are some actual decisions we can apply today to our website or app? The answer comes yet again from some great research done by the good folks over at KISSmetrics.

If you are building an app that mainly targets women, KISSmetrics suggests that women love blue, purple, and green, and dislike orange, brown, and gray.

In case your app is strictly targeting men, the rules of the game are slightly different. Men love blue, green, and black, but can do without brown, orange, and purple.

In another experiment, Performable (now HubSpot) wanted to find out whether simply changing the color of a button would make a difference in conversion rates.

They started out by trying to guess the outcome of a simple choice between two colors (green and red) and trying to guess what would happen.

“Green connotes ideas like “natural” and “environment,” and given its wide use in traffic lights, suggests the idea of “go” or forward movement. The color red, on the other hand, is often thought to communicate excitement, passion, blood, and warning. It is also used as the color for stopping at traffic lights. Red is also known to be eye-catching.”

So, clearly an A/B test between green and red would result in green, the more friendly color. At least that was their guess. Here is what their experiment looked like:

So how did that experiment turn out? The answer was surprising: The red button outperformed the green button by 21%.

What’s most important to consider is that nothing else was changed at all: 21% more people clicked on the red button than on the green button. Everything else on the pages was the same, so it was only the button color that made this difference.

This definitely made me wonder: If we were to read all the research before this experiment and ask every researcher which version they would guess would perform better, I’m sure green would be the answer in nearly all cases. Not so much.

At my company, we’ve also conducted dozens of experiments to improve our conversion rates using changes of colors. While the results weren’t as clear, we still saw a huge change. One hypothesis is that for a social media sharing tool, there is less of a barrier to signup, which makes the differences less significant.

Despite all the studies, generalizations are extremely hard to make. Whatever change you make, treat it first as a hypothesis, and see if the actual experiment supports your ideas. Personally, I’m always very prone to go with opinion based on research I’ve come across. Yet, data always beats opinion, no matter what.

Quick last fact: Why are hyperlinks blue?

This is something that always interested me and is actually a fun story. In short, it's offers the highest contrast between the colors used on early websites.

Here is the full explanation: “Tim Berners-Lee, the main inventor of the web, is believed to be the man who first made hyperlinks blue. Mosaic, a very early web browser, displayed webpages with a (ugly) gray background and black text. The darkest color available at the time that was not the same as the black text was that blue color. Therefore, to make links stand apart from plain text, but still be readable, the color blue was selected.”

I think it's fascinating that tweaking something as small as the color can completely change an outcome. What have been your findings in terms of colors and marketing? Tell me about it in the comments.

Solution to the riddle: Example 1: Facebook, Example 2: Google, Example 3: Flickr, Example 4: LinkedIn

Reprinted with permission from Buffer.

[Image: Flickr user Darrel Birkett]

Add New Comment


  • Geoff Currey

    This is an interesting article. Thanks! I may use the information here next time i have to develop a new site. I have never looked at color in this way before and the thought that it can impact on how the site visitor reacts is something I would like to learn more about.

  • Chris Eekels

    Brlliant article, everybody underestimates the power of color. I've worked in Africa and even there the color of clothing is so important that they make a certain statement when wearing a diffent cloth. In Ghana and other parts of west africa the colors of Vlisco cloth are famous.

    Chris. Teacher ICT Netherlands

  • Chris Eekels

    Brilliant arcticle, everybody under estimates the power of color. I worked in Africa, and nowhere else in the world was the meaning of color of clothing as important as in West Africa. Chris. Teacher ICT .Netherlands

  • There are cultural interpretations as well. For example, blue, in north america, is a very corporate colour. In Columbia it is associated with disease and death - you probably wouldn't want to use it in a pitch for venture capital.

  • freshtight

    Hi @leowid - do you think perhaps the reason the a/b test favored the red button was because it was in contrast to the Performable logo? On the left version, the button doesn't stand out as much (as compared to the right) because it's the primary color on the screen.

    Do you agree?

  • desbest

    Facebook is blue because Mark Zuckerberg is colour blind and can only see the colour blue, out of red, green and blue.

  • Venus Kumar

    I always tend to navigate toward color.  If I do a Google search on a topic and the link takes me to a page with bland colors and not enough interesting pictures, I will back space and choose a different link that is more entertaining and pleasing to the eye to read and enjoy!

  • Tim Gray

    In the red vs green buttons test, red is the obvious choice because it calls for action. If you want people to do something, making them feel all relaxed about it is not going to get you an instant response.

  • Unlock My

    Some interesting insights, I've always thought that blue radiated authority because of the mental association with police and emergency services and that it conveyed security.

  • Gary Michael Porter

    That's funny, never would have thought of that. Police uniforms (and almost all men's apparel going back for centuries, and many classic women's designs as well) have their origins in military uniforms. Police blue, I suspect, is to give for cover under darkness. 

  • $5044056

    Another bozo article from a bozo amateur who thinks pop psychology equals science.  Lemme guess, you believe fiercely in global warming, and listening to Barack Obama read from a teleprompter causes tingles to traverse your legs.

  • $5044056

    And remember, yellow denotes clean and wholesome.  So, if you find yourself out in winter and stumble onto some yellow snow, enjoy!

  • unciviljoker

    red or green ?  21% picked # 2, more then that if the color was the same, so green did win out over red.something like 85% will skip # 1 and pick # 2. fack.