Setup|Chart Style|Legend tab

In Setup|Chart Style, you can specify chart legend options using the Legend tab.

Show legend - Displays the chart legend.

Location - Choose the location for the chart legend, Top center, Top right, Bottom center, Left side or Right side.

Border

Show border - Displays a border around the chart legend.
Default border - Uses the Default border shown.
Custom border - Allows you to select a custom border color, style and weight.
Set Border Color - Choose a custom border color from the Set Chart Legend Border Color palette.

Note: The custom border color selected will display in the color box to the right of the Custom border selection and in the Border style and Border weight display boxes.

Border style - Choose a custom border style from the dropdown list of styles.
Border weight - Choose a custom border weight from the dropdown list of weight choices.

Font

Use the Chart Area font - Uses the font, font style, size and color selected on the Chart Area tab as the font for the chart legend.

Note: The Chart Area font style, size, color and background color will be reflected in the display box under the Set Font Color button when Use Chart Area font is selected.

Use a custom font - Allows you to select a custom font, font style, size and color the chart legend.
Set Font - Choose the font, font style, size, effects and color for the chart legend.
Set Font Color - Choose the font color from a wider selection of color choices for the chart legend.

Note: The Custom font style, size, color and Chart Area background color will be reflected in the display box under the Set Font Color button when Use a custom font is selected.