SASS Syntax Error: Properties aren't allowed at the root of a document

I am using SASS and it has been working, but now I get this...

Syntax error on line 1: Properties aren't allowed at the 开发者_StackOverflowroot of a document.

My file is using variables in the SASS format.

$blue-muted: #222244
$red-muted: #442222
$green-muted: #224422

When I remove the variables (and replace the values with the actual colors), it compiles fine. What is wrong here?

EDIT: My confusion stemmed from having installed HAML 3.0, but getting behavior consistent with an early 2.0 version. It turned out that I had a SASS command line tool from an old version in my path and it was running instead of the current version.

Looks like you are using the new SCSS syntax which should look like:

$blue-muted: #222244;

if you want to use sass, the colors should be declared as:

!blue-muted = #222244