Web design is both a science and an art. While you could be very talented and creative when it comes to web design, there are scientific principles you must never, ever violate.

For example, do you know that there is a right and a wrong way to go about redesigning a website — and that there is a principle you must never violate? Snapchat wouldn’t have suffered badly after its redesign if it operated in accordance with this principle. Do you also know that you shouldn’t just design CTAs because you like a color, or because a particular color performed really well according to an article comparing the performance of different CTA colors? Instead, there is a principle you must follow.

While there are many web design principles you should gradually familiarize yourself with, there are four key principles you must never, ever violate as a web designer. The principles are listed below:

Principle #1: Fitts’ Law

In the most basic sense, Fitts’ law states that the time it will take a person to move a pointer to a target area will be determined by the distance to the target divided by the size of the target. Consequently, a small target size over a long distance leads to poor UX, a big target size over a long distance leads to better UX, and a big target size over a short distance leads to the best UX.

Fitts law
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When you design important elements in violation of Fitts’ law, it becomes increasingly difficult for users to interact with key elements in your design and conversion offers.

The core lesson is this: when designing elements that will require quite some distance to interact with, make them bigger. If your elements cannot be bigger, then try to reduce the distance required by a user to locate them.

Principle #2: Law of Neural Adaptation

There has been a lot of debate in the web design world about the use of color when it comes to CTAs; in particular, designers are crazed about whether the color red, or blue, or orange is the best when it comes to CTAs, but it wouldn’t really matter once you understand the law of neural adaptation.

In essence, the law of neural adaptation states that we eventually tune out stimulus after repeated (or long) exposure to it. For you as a web designer, this affects your use of color. For example, if you designed a long sales page with the blue color scheme in which most of the elements are blue, using a blue CTA as well will result in poor conversions. This is because users are already accustomed to the blue color and are less likely to pay attention to the blue CTA; it doesn’t stand out to them and as a result is ignored.

The solution is simple then: use a color that contrasts with the main color of your design. In our example, a site that uses a blue color scheme that then uses an orange CTA is likely to perform better. This is because the orange color is different from the main color scheme used on the site — users are yet to adapt to it — and it is likely to stand out and be noticed when it is suddenly introduced.

The comparison of website builders in the screenshot below is a very good example that illustrates this point. The site generally uses a blue color scheme but uses an orange CTA that stands out and is easily noticeable.

neural adaptation example
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The lesson for you as a web designer is simple: pay attention to neural adaptation and learn to make use of the power of contrast when designing key elements. Important elements of your web design should use a different color from that of the main color scheme to help them stand out.


Sorgente: 4 Web Design Principles You Should Never, Ever Violate


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