The divine proportion is a mathematical concept dating to ancient times that is used as a principle in almost all types of design from architecture to art to websites. Although the exact origins of the formula and shape are not known, examples of its use can be found through history – Egyptians used the shape in the design of the great pyramids and Greeks used it for the Parthenon (note the shape below).

Print designers have been using the concept for newspaper and magazine design for more than 100 years and the basis for many websites starts with the divine proportion. But is this a “magic” formula and does it have a place in today’s web design toolbox?

### Identification

The divine proportion goes by a handful of names that all refer to the same rectangular shape. Golden rectangle, golden ratio, mean ratio and Phi all refer to the shape that is considered the most pleasing and harmonious to the eye.

The golden rectangle is defined by a shape that has a proportion of 1.618; this is sometimes referred to as the magic number. Although the mathematical equation is quite precise, the use of this theory for design is not. Many opt to round numbers to two decimals and whole numbers to make creating the formula less complex.

But the golden rectangle is used for more than just an overall aesthetic. The shape can be found in navigation bars, the shapes of photographs and in the grouping of parts on a page. Because the shape is so common, many designers create golden rectangles throughout their work without even knowing it.

Perhaps one of the most famous examples of the golden rectangle appears as a Leonardo Da Vinci’s “Vitruvian Man” drawing, which was first published in “De Divina Proportione.” Parts of the shape, in particular the spiral, can also be found in nature; this shape is exemplified by the shell of the nautilus.

### Create

To get this shape for your website, measure the width of your available content area and divide that by 1.618. The resulting number would be the width of your content area and the remaining with would be the space you use for the site’s sidebar.

Using a little math, you can create a simple golden ratio outline for your website. Start with your content area. (We will use 1,024 pixels, the width for most laptop and flat-screen monitors.)

**1,024 px/1.618 = 632.88 px** (which we will round to 633 px)

This number, 633 pixels, will be the width of the main content area.

**1,024 px – 633 px = 391 px**

This number, 391 pixels, is the width for the sidebar.

The perfect golden rectangle maintains the aspect ratio of the original square and adds the extra with to it. So the optimal height in this formula would also be 1,024 pixels.

You can also use an online calculator to figure this equation. Golden Ratio Calculator is a good tool that allows you to enter a width and get an instant calculation that breaks a width into a golden rectangle, such as the 1,024 pixels we used above. Further it uses that number as the width of the larger portion of the golden rectangle and provides the width of the small section and overall shape.

### Uses

Twitter, which launched a redesign late in 2011, used the golden rectangle for the outline of its site. The feed and sidebar combined mirror the golden rectangle. The use of the magic formula was quite intentional according to Doug Bowman, the site’s creative director, in a post on Flickr: “We didn’t leave those ratios to chance. This, of course, only applies to the narrowest version of the UI. If your browser window is wider, your details pane will expand to provide greater utility, throwing off these proportions. But the narrowest width shows where we started, ratio-wise.”

*It’s Numbered* uses the idea of the golden ratio to pair images and text. The idea of the golden rectangle can be used for more than just the overall site design; it can also be used to group items within the site outline.

*MmDesign* uses the principle of the golden rectangle for the dominant image on its site. Not only is the image striking, it has the perfect harmonic shape. The golden rectangle is not just for site design but can be used to create balanced parts throughout a site.

### Pros and cons

Using the golden rectangle will not ensure that your site design works. There are a host of other factors that contribute to a successful design. The formula, though, can help you create harmony and balance and provide a basis for how to formulate a design concept. Many beautifully designed sites do not use this principle, but you are likely to find examples of the golden rectangle within the site structure. Photos, text blocks and sidebars can also showcase this “perfect” shape.

Use the golden rectangle in projects where you want to create a feeling of natural balance and harmony. The structure created by using the shape is naturally pleasing and mimics some of the most well-known images of all time and even nature. Without knowing it, visitors to your site will feel comfortable with the look you have created.

But not all designers agree with the concept. Trying to design around a mathematical formula can be complicated, time consuming and won’t guarantee a nice site layout.

### Analysis

Using the theory of the divine proportion is not for everyone. I think using the theory can get all-consuming when planning a site outline. Moreover because of the depth of each web page, it is almost impossible to maintain the true ratio and then you get stuck trying to fit a golden rectangle above the scroll or stacking multiple golden rectangles in the page design. (Neither option is very efficient.)

When designing with the golden rectangle in mind, try to not get too caught up in the numbers (although some math purists will disagree). Go for the basic shape and idea but don’t force it on your design. Play with variations as well. Create a golden rectangle and forget using the perfect height. (This can work for creating a sidebar for the full depth of your site.) Use the golden rectangle for the shape of images throughout your site or for colored frames.

The golden rectangle works best in web design when used for parts of the site rather than the whole. The shape will help you create beautifully arranged groups of images or text blocks of mirroring size. It can also be used to pair photos without that overly symmetric look. (Size one photo, then size the other using the 1.618 proportion and pair them side by side.)

Look at the grouping of multiple images on the *Irving & Co* page. The landing page features six images. The group uses the outline of the golden rectangle, but the photos are cropped and put together in an interesting way. The shape is not mathematically perfect, but creates a sense of balance and harmony that goes hand-in-hand with the principles of the formula. When using the golden rectangle, plan your design to mirror the shape but not fit into perfectly, pre-shaped boxes. Look past the numbers and think about the overall effect.

I like the classical feel of pages that employ the principle of the golden triangle. Nothing tops a good feel when you land on a new site. Using this theory, you can create that feel and sense of balance using a time-tested theory. But as with any design concept, use the golden rectangle in moderation. Too many perfect shapes stacked on top of each other can end up looking flat, repetitious and uninviting.

Nice. Very good explanation. Will try it in some project.

I’m not that much of a web design person, but I do think that there is some “magic” proportion that a lot of people follow to make their site look good. The catch here is that a lot of them don’t even notice that they’re already using it. For some reason, I think this site is using that golden rectangle, too. About that spiral, I think it’s pretty hard to make out of it if it’s going to be made into a standard. I mean, what’s the exact measurement of the radii of the spiral, and all sorts of questions like that.