Adding a polka dot background to your design in Adobe Illustrator can bring vibrancy and playfulness to your projects. This tutorial will guide you through the process of creating a polka dot background, from setting up your artboard to creating and distributing your dots perfectly.

Before we dive in, ensure you have Adobe Illustrator installed on your computer. This guide uses Illustrator CC, but the steps should be similar in earlier versions.

Creating the Basic Polka Dot Pattern
To start, we'll create a simple polka dot pattern that we can then distribute across our artboard.

First, create a new 8.5 x 11-inch document, then grab the Ellipse Tool (L) and draw a small circle. This will be our dot. You can adjust the size later, but for now, a small circle will do.
Setting Up the Swatch

Next, we'll turn this circle into a swatch, which will make creating our pattern much easier. Select your circle and go to the fly-out menu under the Swatches panel (if it's not visible, go to Window > Swatches). Click on 'New Swatch'.
Name your swatch (e.g., "Polka Dot"), and click 'OK'. Now, whenever you want to add a dot, you can simply drag this swatch onto your artboard.
Setting Up the Artboard

Now, let's set up our artboard so we can see our pattern better. Go to the Artboard panel (if it's not visible, go to File > Document Setup), and click on 'Set Up' at the bottom. Choose 'New Artboard...'.
Create an artboard that's a bit larger than your desired final size. For this example, let's make it 6 x 6 inches. This will give us enough space to work with.
Creating the Polka Dot Pattern

Now, let's start creating our pattern. Grab the Polka Dot swatch you created earlier and drag it onto your artboard. This will be the center dot of your pattern.
Next, we'll create a grid of dots around our center point. To do this, hold down the Shift key and drag the dot out to the size you want. This will create a perfect circle of dots.









Distributing the Dots
Now, we need to distribute these dots evenly across our artboard. Select all the dots, then go to Object > Path > Distribute Horizontal and Distribute Vertical. This will space your dots evenly.
Repeat this process, adjusting the initial dot size and the number of dots until you're happy with your pattern.
Saving and Applying the Pattern
Once you're happy with your pattern, select all the dots and turn them into a pattern. Go to Object > Pattern > Make Pattern. Name your pattern (e.g., "Polka Dot Background") and click 'OK'.
Now, you can apply this pattern to your artboard. Go to the Swatches panel, and find your new 'Polka Dot Background' pattern. Drag it onto your artboard to apply it.
Don't be afraid to experiment with different dot sizes, colors, and patterns. You can even create interlocking or overlapping dots for a more complex pattern.
Finally, remember to have fun with your design! Polka dots are all about adding a touch of playfulness and personality to your projects. So, let your creativity run wild!