Method 1
rgb(255, 255, 255)    - for each color, a value between o and 255 is shown

• The first number corresponds to red color
• The second number corresponds to green  color
• The third number corresponds to blue color.
  

Method 2
#0000FF                  - is basically the same as above, but uses an hexadecimal code, from 00 to FF.

• "#" starts the code, but means nothing (in fact, may be removed)
  
• the first 2 digits correspond to the amount of red color
• the next 2 to the amount of green, and
• the last 2 to the amount of blue.

Only the following characters can be used to generate a color code in this second method:

        0 1 2 3 4 5 6 7 8 9 A B C D E F  (a total of 16 values)

For each digit the lowest value is 0 and the highest is F. 

Values used in method 1 are decimal, and values in method 2 hexadecimal.

Method 1	Method 2
0	00
1	01
15	0F
16	10
255	FF