Creating A Sense Of Depth In Web Design

In terms of current web design trends, many designers find it hard to go past creating a sense of depth on their design. Using some sneaky techniques, designers create the illusion of the third dimension on a screen that is very much 2D.
So how’s it done? Let’s look specifically at the most common the techniques used by designers to create the third dimension.
Shadows
The most simple way to give an object depth is to hover it above the background, and the easiest way to do that is with a drop shadow. It draws into play the perceived location of a light source that gives the shadow.

The location of this light source (known as the sun) can change, but the user’s brain is programmed to think the sun is in the ‘noon’ position: at the top of the screen, right in the center. Even though that means, in theory, you can have longer shadows the closer your object gets to the edge of the screen, its a wise idea to keep the shadows on a similar angle to prevent the perception that there’s a very small light bulb in the center of your design. Follow me?
It’s always best to slightly underestimate the shadow you need; I tend to think the subtler the shadow, the better the effect. Also, make sure similar objects have the same sense of depth so they operate together on the desired dimension. You can apply a shadow to a similar object or one of the other techniques.
Highlights
Highlights, for want of better words, are simply the glints of light reflected by a user’s imagined light source. As I said before this light source, or ’sun’, is positioned at the top of the screen. That means most highlights you will see are on the top side of an object.

Particularly useful on dark backgrounds and when paired with a shadow, the highlight gives a perception of pixel-perfect quality that many designers find very desirable. I’d argue that single-pixel highlights are the single most popular web-design fad right now. You definitely did not hear this here first.
Bevels
Bevels are the combination of two of the above, highlights and shadows, generally with a chamfered edge.
A quick disclaimer before we continue. You see, bevels — and embossings as I’m about to cover — are regarded as bad design by many in the industry. The hatred of the bevel is not unreasonable, but nor is it an opinion you have to share. I like to use bevels on the odd occassion, but when I do, I stick to a few guidlines.

For starters, try not to blend or blur the edges between the slope and the flat on your bevel. It just looks ameturish. In fact, stick to heavily-defined angles on your bevel (chisel hard, baby) and you can’t really go wrong. Use it as an upgrade of the highlight or shadow techniques in situations that require it.
If you find yourself using it for the fifth time on the one design, I think you’ve got to take a step back. Put the bevel down.
Embossings
Embossings are the opposite of bevels. It’s where the shadow is formed by the top of the embossing and the lightsource hits the bottom part of the embossing. Think of it like an awning that products you from the sun, but light still creeps in around the floor.

Whatver you place within the embossing is taken-back a step on the z-axis. Search boxes have been embossed since the start of the web and we’re trained to think of them as forms, waiting for us to enter information.

Notice the embossed search field
Don’t get too carried away with the embossing though. Our brains bypass the text in a depressed or embossed box as we are trained to think of it as a side-note. Be wary.
Gradients
Gradients are incredibly popular in web design because they are an easy way to take even the most boring and utilitarian of backgrounds up a notch on the excitement scale.

Like all of the above, the more subtle gradient, the less the user knows its there. What good is that, you ask? Well, don’t get me started on the long explanation, but on the internet, content comes first and anything that detracts from that is doing more harm than good.
Most often, you’ll see gradients that move from light to dark as they move down from the top. Experiment with similar tones and you’ll find something that’s tasteful. Remember good, taste and gradient are words that, before the web, were rarely in the same sentence. Let’s not ruin it for everyone — be subtle!
Uncovered angles
The final, most complex and possibly the most effective technique for creating depth is the use of uncovered angles. To trick the eye, designers reveal the two dimensional planes that interact and join to form a solid.

Basically, it’s like constructing a building on a webpage and showing all the walls and supporting fixtures that make it a structure. Think of the elements of your page as tops of skyscrapers, and you’re viewing the entire page from above in a helicopter. You see the vertical sides of the skyscrapers and therefore comprehend the depth in front of you.
It’s a matter of filling the in the parts we should be seeing if, like in my example, a ribbon was wrapped around a larger solid. With highlight and shadow, the third dimension can not only appear, but be really believable.







