Google Material Colors - Text/Icons and background colors

_material-design-text-color.scss

// Dark text on light backgrounds
$md-dol-primary: rgba(0,0,0,.87);
$md-dol-secondary: rgba(0,0,0,.54);
$md-dol-hint: rgba(0,0,0,.38);
$md-dol-divider: rgba(0,0,0,.12);

// White text on dark backgrounds
$md-lod-primary: rgba(255,255,255,1);
$md-lod-secondary: rgba(255,255,255,.70);
$md-lod-hint: rgba(255,255,255,.50);
$md-lod-divider: rgba(255,255,255,.12);

// Icon Opacity
@mixin md-icon($state) {
    opacity: $state;
}

// Dark icon / light background
$md-di-active: .54;
$md-di-inactive: .38;

// Light icon / dark background
$md-li-active: 1;
$md-li-inactive: .50;