COLOR
If you like the particular color on the screen and want to use it for your website, you will need to know the name of the color. Here are the tools those tell you more than just a name of the color.
EyeDropper
http://eyedropper.inetia.com/HTML/eng/default.asp
You can download EyeDropper from this site which you can use to find out the color name of the current location on any website.
Dotcolor
http://inetis.com/freeware.asp
Perfect tool for web designers. It's small, it's fast, and it's very useful! With DotColor you can zoom any area of the screen, you can examine the color of the pixels under cursor, you can even copy part of the screen on the
clipboard. If you ever wanted to know how your HTML page looks on a different background, you can try this with color mixer and change certain pixels on your screen to a different color!

RULER
Screen Ruler
http://www.spadixbd.com/freetools/jruler.htm
This Screen Ruler is a great tool that allows you to accurately measure anything on your screen. Screen Ruler can display Pixels, Inches, Picas or Centimeters.
Screen Calipers
http://www.iconico.com/caliper/
The Screen Calipers resemble real life calipers in both form and function. The Screen Calipers can be used with any program where fast and accurate measurements are required.
Cool Ruler
http://www.fabsoft.com/pages/Downloads/Downloads.htm#Cooler
Not free and difficult to use.

The CSS code of my weblog http://oksoft.antville.org/ is as follows:

a {text-decoration: none;}
a:link {color: #FF3300;}
a:visited {color: #FF3300;}
a:hover {
background-color: #FF3300;
color: #FFFFFF;
}
a:active {color: #FF0000;}

Well, what does it mean?
There is no text decoration applied to the links.
Link color is red.
Visited color is red again.
Active color is red but in different shade.
Hover color is white with red background.

Remember, LVHA (Link, Visited, Hover, Active). Any other sequence may become problematic.