If you’ve seen Life in Color by David Attenborough, you’ll know what we mean when we say color is a language. It has been used by organisms for all sorts of displays and functions. From displays of power and danger to courtship and defense, it has been a successful language throughout evolution. So, naturally, on the world wide web, we still use color to seduce, influence, alert and convey countless emotions to our fellow humans through art, advertising, marketing, and much more.

The concept of color is fascinating and it’s at the core of designing, so whether you’re a beginner or a pro, keep reading – there’s a lot to learn! We’ll be discussing some crucial color concepts before we get into how blue got its status in the world of design, blue complementary colors, beautiful hex codes of blue and colors that complement blue, and how you can start designing with blue using free Simplified tools!

The origins of complementary colors and its theories

To best understand how to use blue complementary colors, let’s take a look at how the theory of complementary colors came about.

Building on all the works that came before him, from Claude Botet to Isaac Newton, Moses Harris’s chart is arguably the first full-color circle, as seen in his book The Natural System of Colors. He derived the 18 colors of his wheel from the three ‘primitive’ colors: red, yellow, and blue. And when these are superimposed, the color black is formed, as is seen at the center. In his book, Harris focused on the relationships between colors and how they are coded and created.

What value does blue hold?

The color blue is a contradiction in every sense of the word. This is mostly why blue and blue complementary colors make for such intriguing designs in any space.

This doesn’t just apply to design, either. Blue is a very evocative word that also helps us to express our feelings! In the emotional landscape, we talk about feeling blue when we’re sad, while in the physical landscape, we talk about good weather and happy people when the skies are blue. The blues is considered to be an invigorating and powerful genre of music … we could go on and on.

But we’ll let poet, artist and thinker Goethe take over when talking about the color blue.

“Blue: as yellow is always accompanied with light, so it may be said that blue still brings a principle of darkness with it. This color has a peculiar and almost indescribable effect on the eye. As a hue it is powerful – but it is on the negative side, and in its highest purity is, as it were, a stimulating negation. Its appearance, then, is a kind of contradiction between excitement and repose.” – Goethe, Theory of Colors

Using blue and blue complementary colors for branding

As Jessica Stillman writes for The Inc about the use of blue in branding,

The appeal of blue and blue complementary colors, according to experts, isn’t just a fad of the moment. How do we know? As early as the 1940s, when scientists started asking people about their color preferences, tons of people picked blue. That was despite researchers asking thousands of people in hundreds of countries. It was a global phenomenon among young and old, the rebellious and the conservative, Eastern and Western.”

And it’s not just a preference, as Stephen Westland, professor of color science and technology at the University of Leeds explains to The Conversation:

The world’s favorite color also has measurable effects on the body. Red light does seem to raise heart rate, while blue light lowers it. The effect is small but has been corroborated in a 2015 paper by a group in Australia.”

Therefore, the marketing industry started to take advantage of the countless benefits of using blue and blue complementary colors to create more persuasive creatives. When used the right way, blue and colors that complement blue can create a sensation of trust and security, so a lot of brands naturally incline towards it.

As smashing magazine reports,

“In design, the exact shade of blue you select will have a huge impact on how your designs are perceived. Light blues are often relaxed and calming. Bright blues can be energizing and refreshing. Dark blues, like navy, are excellent for corporate sites or designs where strength and reliability are important.”

Brands that use blue

1. LinkedIn

The professional networking site LinkedIn uses blue in its logo to develop trust, intelligence, and security for its users.

2. Skype & Zoom

This video calling apps Skype and Zoom use blue to convey a sense of loyalty, security, and trust to their users. Image Source: proofhub.com

3. Calm

4. The Guardian

This digital news website and app The Guardian uses blue to give a sense of security, trust, intelligence and integrity to its readers. Image Source: pressgazette.co.uk

5. Google

Google experimented with 41 shades of blue for its logo to make the most of this universal hue. Image Source: google.com

What are hex color codes?

Like we see wavelengths of light as red or blue, the computer systems see color through its hex color code. So, when you want a web page or an app to display a certain color, instead of typing the color name, you type in the hex code.

As writers/coders at the problem site explain,

Hex colors are based on the RGB color model that has been in use since the early days of photography. The theory behind the model is that you can create virtually any color the eye can see by assigning different combinations of red, green, and blue color values. Televisions, digital cameras, and video projectors and practically every computer and phone screen in existence use the RGB color model.

Fascinating, right?

Let’s take a look at some of the best blue hex color codes you can use to create beautiful designs for your next project – with or without blue complementary colors!

Complementary colors and some design inspiration with colors that complement blue

If you’re just starting out and all this talk of the color wheel and blue complementary colors is making your head spin, here’s the perfect life hacker guide to catch you up to speed.

In brief, complementary colors are any two colors opposite each other on the wheel. For example, blue complementary colors will be orange and yellow, and reds will be green. And when you use complementary colors together, they create an incredible contrast, which will help your design stand out.

Image Source: pinterest.com

As you can see on the color wheel, the colors that complement blue are the ones right across the wheel from blue. So, depending on the shade you use, the best blue complementary colors range across the yellow-orange-red spectrum. Even though yellow is not directly opposite blue on the color wheel, blue and yellow are complementary colors and can create a vibrant contrasting design.

Trying different shades of blue with free templates on Simplified

Simplified is a great tool for designers, whether you’re just starting out, or are an expert!

Moreover, here are a couple of ready-to-use templates from simplified that make use of blue!

One Free app to design, collaborate, and scale your work – try Simplified today.

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