diff --git a/src/core/tokenizer.ts b/src/core/tokenizer.ts
index 6b034124cb..fe37c7e3f2 100644
--- a/src/core/tokenizer.ts
+++ b/src/core/tokenizer.ts
@@ -35,15 +35,15 @@ const REPEATABLE_SYMBOLS_REGEX = REPEATABLE_SYMBOLS.map(escapeRegExp)
   .map((s) => `${s}+`)
   .join("|");
 const FIXED_TOKENS_REGEX = FIXED_TOKENS.map(escapeRegExp).join("|");
-const IDENTIFIERS_REGEX = "[a-zA-Z_]+[a-zA-Z_0-9]*";
+const IDENTIFIERS_REGEX = "[a-zA-Z_0-9]+";
 const SINGLE_SYMBOLS_REGEX = "[^\\s\\w]";
-const NUMBERS_REGEX = "(?<=[^.\\d]|^)\\d+\\.\\d+(?=[^.\\d]|$)|\\d+"; // (not-dot/digit digits dot digits not-dot/digit) OR digits
+const NUMBERS_REGEX = "(?<=[^.\\d]|^)\\d+\\.\\d+(?=[^.\\d]|$)"; // (not-dot/digit digits dot digits not-dot/digit)
 
 const REGEX = [
-  IDENTIFIERS_REGEX,
   FIXED_TOKENS_REGEX,
   REPEATABLE_SYMBOLS_REGEX,
   NUMBERS_REGEX,
+  IDENTIFIERS_REGEX,
   SINGLE_SYMBOLS_REGEX,
 ].join("|");
 
diff --git a/src/test/suite/tokenizer.test.ts b/src/test/suite/tokenizer.test.ts
index 780e432270..d0da8c621c 100644
--- a/src/test/suite/tokenizer.test.ts
+++ b/src/test/suite/tokenizer.test.ts
@@ -40,6 +40,12 @@ const tests: TestCase[] = [
   ["\\r\\n\\t", ["\\r", "\\n", "\\t"]],
   // Comments
   ["// Hello world", ["//", "Hello", "world"]],
+  // Hex colors
+  ["#aaaaaa", ["#", "aaaaaa"]],
+  ["#11aaaa", ["#", "11aaaa"]],
+  ["#aa11aa", ["#", "aa11aa"]],
+  ["#aaaa11", ["#", "aaaa11"]],
+  ["#111111", ["#", "111111"]],
 ];
 
 suite("tokenizer", () => {