The provided information doesn't specify a color index for chocolate brown. Instead, it gives the hexadecimal color code and RGB/CMYK values. To elaborate:
- Hexadecimal Color Code: #713600 (This is the most common way to define the color digitally).
- RGB Values: R:113, G:54, B:0 (Represents the intensity of red, green, and blue light needed to create the color).
- CMYK Values: C:0, M:0.52, Y:1, K:0.56 (Represents the percentages of cyan, magenta, yellow, and black inks needed to print the color).
Color indices aren't generally used to define a specific color like "chocolate brown". Color indices are more commonly associated with palettes in image processing or limited color systems. A specific chocolate brown might have different index values depending on the specific palette being used. Without knowing the particular color index system or palette being referenced, it is impossible to provide a numerical color index.