diff --git a/src/__tests__/classes.js b/src/__tests__/classes.js
index 9cc2a0b..34222c4 100644
--- a/src/__tests__/classes.js
+++ b/src/__tests__/classes.js
@@ -20,3 +20,9 @@ test('qualified class', 'button.btn-primary', (t, tree) => {
     t.equal(tree.selectors[0].rules[0].type, 'tag');
     t.equal(tree.selectors[0].rules[1].type, 'class');
 });
+
+test('escaped numbers in class name', '.\\31\\ 0', (t, tree, d) => {
+    t.plan(2);
+    t.equal(tree.selectors[0].rules[0].type, 'class');
+    t.equal(tree.selectors[0].rules[0].value, '\\31\\ 0');
+});
diff --git a/src/parser.js b/src/parser.js
index 9a31e81..1f281a2 100644
--- a/src/parser.js
+++ b/src/parser.js
@@ -234,6 +234,18 @@ export default class Parser {
             return this.namespace();
         }
         let word = this.tokens[this.position][1];
+        while (this.tokens[this.position + 1] && this.tokens[this.position + 1][0] === 'word') {
+            this.position ++;
+            let current = this.tokens[this.position][1];
+            word += current;
+            if (current.lastIndexOf('\\') === current.length - 1) {
+                let next = this.tokens[this.position + 1];
+                if (next[0] === 'space') {
+                    word += next[1];
+                    this.position ++;
+                }
+            }
+        }
         let hasClass = indexesOf(word, '.');
         let hasId = indexesOf(word, '#');
         if (hasId.length > 1) {