for the hex code, (ie: ff00aa)
you have Red = ff, Green = 00, and Blue = aa.
All colors can be be represented by varying values of red, green, and blue.
"00" is no brightness of a particular color, and "ff" is all-out brightness.
So, in my example, you have a color made up of all out bright red, no green, and medium-high blue.
So it should be a pinkish color: alot of red and a good deal of blue will do that.
Other simple examples: 000000 is jet black, and ffffff is pure white.