More contrast in base colors

sass/style.scss

@@ -6,8 +6,8 @@ $width-narrow: $width-wrap*0.75;
 
 $col-accent: #fc0;
 $col-dark: #131516;
-$col-medium: lighten($col-dark, 4);
-$col-light: lighten($col-dark, 18);
+$col-medium: lighten($col-dark, 8);
+$col-light: lighten($col-dark, 30);
 $col-white: #e8e6e3;
 $col-offwhite: darken($col-white, 25);