Grunge Backgrounds Tutorials

In this tutorial we will use Adobe Illustrator to make a 100% vector grunge abstract background. We will learn how to layer with transparencies and blends in order to achieve depth and a grunge style. We will also use blends and a scatter brush to create a bokeh highlight effect.

2. Create a new layer for the grunge paint strokes. You may use any paint style brush you would like. There are a variety of them that can be found on the internet and most versions of Illustrator ship with a basic set. ; Open Brush Library > Artistic > Artistic_chalkcharcoalpencil

3. Since we are going for a grunge style, just throw your paint strokes anywhere making sure you get some good texture. For this project I set the stroke color to #4C1E21 and set the transparency to multiply. If you have having trouble with the color working with brush you are using, you may want to expand the stroke once you are happy with your results.

4. Now we are going to make a simple scatter brush to add some more depth. Start by making a small circle shape by selecting the ellipse tool (L). Hold down Shift while you make the shape so that it ends in a perfect circle. Set the color to #753536.

5. Once your circle is made you can simply drag it over to the brush window to create a new brush.

6. This will open a new window that will ask you for the brush type. We are going to choose “Scatter Brush” and click OK.

7. You may need to play with these settings depending on how large your art board and circle shape is. You will want to make Size, Spacing and Scatter all set to “Random”. Rotation doesn’t matter as it is a circle shape. Under Colorization you will want to choose “Tints”. Once you are done, click OK.

8. Create a new layer and use your new scatter brush to fill in over top of your grunge painted area. The best method to use is the pencil tool (N). Just make some scribble lines and apply the scatter brush to them.