While migrating to webpack 2 I stumbled upon CSS-Modules @values being undefined. Interestingly enough values like e.g. 1px or rgb values are working fine. Hexadecimal definitions simply seem to vanish. Moreover I am not sure, why there is a {} after the second definition.

test.sass

@value test_1 #555
@value test_2 rgb(0,255,0)

node node_modules\node-sass\bin\node-sass test.sass > test.css produces:

test.css

@value test_1;
@value test_2 rgb(0,255,0) {}

version info:

$ node-sass --version
node-sass       4.5.2   (Wrapper)       [JavaScript]
libsass         3.5.0.beta.2    (Sass Compiler) [C/C++]

Windows 10
$ node -v
v4.8.2

Sassmeister output:

@value test_1 #555
@value test_2 rgb(0,255,0);

Ruby output on win xp host:

@value test_1 #555;
@value test_2 rgb(0,255,0);

/*# sourceMappingURL=test.css.map */

version info:

$ ruby -v
ruby 2.0.0p648 (2015-12-16) [i386-mingw32]

$ sass -v
Sass 3.4.23 (Selective Steve)

I could reproduced the said behaviour since node-sass 3.6.0 with libsass 3.3.6.

Thanks!