Google's "41 Shades of Blue" & the Power of Color in CTAs

Our web design expert, Elwyn Davies, delves into the nuances of colour in user engagement.

As I sit back in my well-worn chair, the screen in front of me glows with an array of colours. After a few hours, they all seem to blend into one.

It's a usual day in the life of a web designer where sometimes we struggle to see things with a fresh perspective. This is perhaps why we sometimes overlook the importance of colour in web design.

This topic always brings me back to the 41 shades that Google famously tested to see which would get the most clicks. And this story, reaching legendary status among design circles, isn't just about colour; it's about understanding how minor details can significantly impact user interaction and decision-making.

"Choosing the right color for your Call to Action is a strategic move that can significantly affect user engagement and conversion rates."

- Elwyn Davies, Pixelhaze Academy

The Impact of Color in CTAs

When we talk about Call to Action (CTA) buttons, we're not just discussing a part of a webpage; we're talking about the conversion point when a user decides to engage further with your content or product. The right colour can increase visibility, evoke the desired emotional response, and significantly influence decision-making. Google's "41 shades of blue" experiment wasn't just a whimsical dive into aesthetics, it rarely is with Google; it was instead a calculated quest to find which hue resonated most, proving that even the slightest variations can lead to notable differences in user behaviour.

The Google "41 Shades of Blue" Experiment

Google's methodical approach to choosing the perfect blue exemplifies the meticulous nature of web design. By altering the colour of links shown to users and measuring the variations' performance, Google underscored the importance of colour in user interface design. This experiment isn't just a tale of colour choice; it teaches the importance of data-driven design and how even the most minor changes can significantly improve performance and user engagement.

The Debate: Data-Driven vs. Intuitive Design: The "41 shades of blue" experiment sits at the heart of a longstanding debate in the design world. On one side is the argument for data-driven decisions, where every choice is backed by meticulous testing and analysis. On the other side is the belief in intuitive design, where experience, gut feeling, and creativity lead the way. Google's experiment, while undoubtedly successful in its goal, represents an extreme in the pursuit of data-driven design, raising questions about the space left for creativity and innovation.

The Resignation that Sparked a Conversation: Douglas Bowman's resignation from Google over this experiment brought the conversation into the public eye. His departure highlighted a fundamental friction within the tech giant's culture and, by extension, the tech and creative industries at large. Of course, it wasn't just about the shades of blue; it was about the role of design thinking, UX Design, Art, and whether an over-reliance on data might strip away the very essence that makes design human-centric and intuitive.



The web design industry is full of surprising details, like this example of how different shades of blue can affect user interaction. It is important to remember that this isn't just a quirky piece of trivia; it's an example of the depth of analysis and optimisation that goes into creating a user-friendly digital presence. Big data is here to stay, and it has firmly encroached into the day-to-day lives of professional web designers.

- Elwyn Davies, Pixelhaze Academy

Takeaway Points:

  • Colour significantly influences user behaviour and decision-making in CTAs.

  • Minor variations in colour, like Google's 41 shades of blue, can substantially impact click-through rates. Especially for larger data samples

  • Data-driven design helps identify the most effective elements in user interaction.

  • Balancing creativity with analytical decision-making is crucial in web design and it could be argued that we have not found the perfect equilibrium just yet.

Wrap-up:

As we unravel the story behind Google's colour experiment, it's clear that the implications go far beyond a mere choice of shade. It's about how data and design interplay to create an engaging user experience. Remember, the next time you pick a colour for your CTA (Call To Action), you're not just painting a button but setting the stage for increased user interaction.

Well, that’s the plan anyway…

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