Now you may be wondering how we can represent the RGB model in Python. We can represent a color with a new type of data called a tuple. A tuple is an immutable collection of objects: immutable meaning that it cannot be modified once it is created. You can imagine tuples to be like immutable lists. In Python, a tuple is represented similarly to a list except with round brackets or parenthesis () rather than square brackets [].

Below is a tuple of 3 integers, 255, 0, and 0.

red = (255,0,0)

Similar to lists, we can access values in a tuple from indexing. To get the first value in red, we can index the 0th index which will print out 255. Note that indexing here is the same as lists with the square brackets [].