How to Color Fill in Adobe Illustrator?

To color fill an object in Adobe Illustrator, you need to use the Fill tool, accessible through various panels. Here's a breakdown of how to do it:

Accessing the Fill Tool

You can access the Fill tool in several places:

Toolbar: Located on the left side of your screen, look for the Fill and Stroke section.
Properties Panel: Usually on the right side of the screen (Window > Properties if it's not visible).
Control Panel: A bar located at the top of the screen, it changes depending on the tool selected.
Color Panel: (Window > Color)

Select the Object: Use the Selection Tool (V) to click on the object you want to fill.
Activate the Fill: In the Fill and Stroke section (in any of the panels mentioned above), you'll see two squares: one for Fill and one for Stroke. Double-click the Fill square to bring it to the front. This indicates you're about to change the fill color.
Choose a Color:
- Color Panel: Choose a color from the color spectrum.
- Swatches Panel: (Window > Swatches) Select a pre-defined color swatch.
- Eyedropper Tool (I): Click on any colored area (even outside Illustrator) to sample that color.
- Color Picker: Double-clicking the Fill square will also open the Color Picker, giving you fine-grained control.
Apply the Color: Once you've selected your desired color, Illustrator will automatically apply it to the selected object's fill.

No Fill: To remove the fill, select the "None" option (a white square with a red diagonal line) in the Color Panel, Swatches Panel, or Fill and Stroke options.
Live Paint Bucket Tool: If you have complex shapes or areas you want to fill, the Live Paint Bucket tool (K) can be useful. Select the tool, choose a color, and then click inside the area you want to fill.
Gradients and Patterns: The Fill can also be set to a gradient or pattern instead of a solid color. These options are typically found in the Swatches panel or the Gradient panel (Window > Gradient).