Use the HTML color picker to find your HTML color code
If enabled, use the middle multi-color scroll bar to scroll up or down to the color you want. To select the shade of color, click the shade you want in the large shade box.
Finally, the color code appears in the bottom-right corner # box. To keep that color, click the text boxes below the color picker, select the color, and click the alternate box to begin with a new color.
The above HTML color code picker uses code from the YUI Color Picker script.