diff --git a/core/lib/Drupal/Core/Plugin/Validation/Constraint/LengthConstraint.php b/core/lib/Drupal/Core/Plugin/Validation/Constraint/LengthConstraint.php
new file mode 100644
index 0000000..5b23c98
--- /dev/null
+++ b/core/lib/Drupal/Core/Plugin/Validation/Constraint/LengthConstraint.php
@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Plugin\Validation\Constraint\RangeConstraint.
+ */
+
+namespace Drupal\Core\Plugin\Validation\Constraint;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Symfony\Component\Validator\Constraints\Length;
+
+/**
+ * Length constraint.
+ *
+ * Overrides the symfony constraint to use Drupal-style replacement patterns.
+ *
+ * @todo: Move this below the TypedData core component.
+ *
+ * @Plugin(
+ *   id = "Length",
+ *   label = @Translation("Length", context = "Validation"),
+ *   type = { "string" }
+ * )
+ */
+class LengthConstraint extends Length {
+
+  public $maxMessage = 'This value is too long. It should have %limit character or less.|This value is too long. It should have %limit characters or less.';
+  public $minMessage = 'This value is too short. It should have %limit character or more.|This value is too short. It should have %limit characters or more.';
+  public $exactMessage = 'This value should have exactly %limit character.|This value should have exactly %limit characters.';
+
+  /**
+   * Overrides Range::validatedBy().
+   */
+  public function validatedBy() {
+    return '\Symfony\Component\Validator\Constraints\LengthValidator';
+  }
+}
diff --git a/core/lib/Drupal/Core/Plugin/Validation/Constraint/RangeConstraint.php b/core/lib/Drupal/Core/Plugin/Validation/Constraint/RangeConstraint.php
new file mode 100644
index 0000000..0d27d29
--- /dev/null
+++ b/core/lib/Drupal/Core/Plugin/Validation/Constraint/RangeConstraint.php
@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Plugin\Validation\Constraint\RangeConstraint.
+ */
+
+namespace Drupal\Core\Plugin\Validation\Constraint;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Symfony\Component\Validator\Constraints\Range;
+
+/**
+ * Range constraint.
+ *
+ * Overrides the symfony constraint to use Drupal-style replacement patterns.
+ *
+ * @todo: Move this below the TypedData core component.
+ *
+ * @Plugin(
+ *   id = "Range",
+ *   label = @Translation("Range", context = "Validation"),
+ *   type = { "integer", "float" }
+ * )
+ */
+class RangeConstraint extends Range {
+
+  public $minMessage = 'This value should be %limit or more.';
+  public $maxMessage = 'This value should be %limit or less.';
+
+  /**
+   * Overrides Range::validatedBy().
+   */
+  public function validatedBy() {
+    return '\Symfony\Component\Validator\Constraints\RangeValidator';
+  }
+}
diff --git a/core/lib/Drupal/Core/TypedData/TypedDataManager.php b/core/lib/Drupal/Core/TypedData/TypedDataManager.php
index bbc132f..8b5306d 100644
--- a/core/lib/Drupal/Core/TypedData/TypedDataManager.php
+++ b/core/lib/Drupal/Core/TypedData/TypedDataManager.php
@@ -13,6 +13,7 @@
 use Drupal\Core\Plugin\Discovery\HookDiscovery;
 use Drupal\Core\TypedData\Validation\MetadataFactory;
 use Drupal\Core\Validation\ConstraintManager;
+use Drupal\Core\Validation\DrupalTranslator;
 use Symfony\Component\Validator\ValidatorInterface;
 use Symfony\Component\Validator\Validation;
 
@@ -250,6 +251,7 @@ public function getValidator() {
     if (!isset($this->validator)) {
       $this->validator = Validation::createValidatorBuilder()
         ->setMetadataFactory(new MetadataFactory())
+        ->setTranslator(new DrupalTranslator())
         ->getValidator();
     }
     return $this->validator;
diff --git a/core/lib/Drupal/Core/Validation/ConstraintManager.php b/core/lib/Drupal/Core/Validation/ConstraintManager.php
index 96c4306..dd3ece7 100644
--- a/core/lib/Drupal/Core/Validation/ConstraintManager.php
+++ b/core/lib/Drupal/Core/Validation/ConstraintManager.php
@@ -50,16 +50,6 @@ public function __construct() {
     $this->factory = new DefaultFactory($this->discovery);
 
     // Add in definitions for constraints shipped with Symfony.
-    $this->discovery->setDefinition('Range', array(
-      'label' => t('Range'),
-      'class' => '\Symfony\Component\Validator\Constraints\Range',
-      'type' => array('integer', 'float'),
-    ));
-    $this->discovery->setDefinition('Length', array(
-      'label' => t('Length'),
-      'class' => '\Symfony\Component\Validator\Constraints\Length',
-      'type' => 'string',
-    ));
     $this->discovery->setDefinition('Null', array(
       'label' => t('Null'),
       'class' => '\Symfony\Component\Validator\Constraints\Null',
diff --git a/core/lib/Drupal/Core/Validation/DrupalTranslator.php b/core/lib/Drupal/Core/Validation/DrupalTranslator.php
new file mode 100644
index 0000000..266d935
--- /dev/null
+++ b/core/lib/Drupal/Core/Validation/DrupalTranslator.php
@@ -0,0 +1,92 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Validation\DrupalTranslator.
+ */
+
+namespace Drupal\Core\Validation;
+
+use Symfony\Component\Translation\TranslatorInterface;
+
+/**
+ * Translates strings using Drupal's translation system.
+ *
+ * This class is used by the Symfony validator to translate violation messages.
+ */
+class DrupalTranslator implements TranslatorInterface {
+
+  /**
+   * The locale used for translating.
+   *
+   * @var string
+   */
+  protected $locale;
+
+  /**
+   * Implements \Symfony\Component\Translation\TranslatorInterface::trans().
+   */
+  public function trans($id, array $parameters = array(), $domain = NULL, $locale = NULL) {
+
+    return t($id, $this->processParameters($parameters), $this->getOptions($domain, $locale));
+  }
+
+  /**
+   * Implements \Symfony\Component\Translation\TranslatorInterface::transChoice().
+   */
+  public function transChoice($id, $number, array $parameters = array(), $domain = NULL, $locale = NULL) {
+    // Violation messages can separated singular and plural versions by "|".
+    $ids = explode('|', $id);
+
+    if (!isset($ids[1])) {
+      throw new InvalidArgumentException(sprintf('The message "%s" cannot be pluralized, because it is missing a plural (e.g. "There is one apple|There are @count apples").', $id));
+    }
+    return format_plural($number, $ids[0], $ids[1], $this->processParameters($parameters), $this->getOptions($domain, $locale));
+  }
+
+  /**
+   * Implements \Symfony\Component\Translation\TranslatorInterface::setLocale().
+   */
+  public function setLocale($locale) {
+    $this->locale = $locale;
+  }
+
+  /**
+   * Implements \Symfony\Component\Translation\TranslatorInterface::getLocale().
+   */
+  public function getLocale() {
+    return $this->locale ? $this->locale : language(LANGUAGE_TYPE_INTERFACE)->langcode;
+  }
+
+  /**
+   * Processes the parameters array for use with t().
+   */
+  protected function processParameters(array $parameters) {
+    $return = array();
+    foreach ($parameters as $key => $value) {
+      if (is_object($value)) {
+        // t() does not work will objects being passed as replacement strings.
+      }
+      // Check for symfony replacement patterns in the form "{{ name }}".
+      elseif (strpos($key, '{{ ') === 0 && strrpos($key, ' }}') == strlen($key) - 3) {
+        // Transform it into a Drupal pattern using the format %name.
+        $key = '%' . substr($key, 3, strlen($key) - 6);
+        $return[$key] = $value;
+      }
+      else {
+        $return[$key] = $value;
+      }
+    }
+    return $return;
+  }
+
+  /**
+   * Returns options suitable for use with t().
+   */
+  protected function getOptions($domain = NULL, $locale = NULL) {
+    // We do not support domains, so we ignore this parameter.
+    // If locale is left NULL, t() will default to the interface language.
+    $locale = isset($locale) ? $locale : $this->locale;
+    return array('langcode' => $locale);
+  }
+}
diff --git a/core/modules/system/lib/Drupal/system/Tests/TypedData/TypedDataTest.php b/core/modules/system/lib/Drupal/system/Tests/TypedData/TypedDataTest.php
index 3d2c256..61f2546 100644
--- a/core/modules/system/lib/Drupal/system/Tests/TypedData/TypedDataTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/TypedData/TypedDataTest.php
@@ -214,16 +214,24 @@ public function testTypedDataValidation() {
     $violations = $integer->validate();
     $this->assertEqual($violations->count(), 1);
 
-    $message = t('This value should be {{ limit }} or more.', array('{{ limit }}' => 5));
-    // Right now there is no support for getting translated messages, so test
-    // doing it manually for now.
-    // @todo: Replace this to use the API for getting translations.
-    $translation = t($violations[0]->getMessageTemplate(), $violations[0]->getMessageParameters());
-    $this->assertEqual($translation, $message, 'Translated violation message retrieved.');
-    $this->assertEqual($violations[0]->getPropertyPath(), '');
+    // Test translating violation messages.
+    $message = t('This value should be %limit or more.', array('%limit' => 5));
+    $this->assertEqual($violations[0]->getMessage(), $message, 'Translated violation message retrieved.');
     $this->assertEqual($violations[0]->getPropertyPath(), '');
     $this->assertIdentical($violations[0]->getRoot(), $integer, 'Root object returned.');
 
+    // Test translating violation messages when pluralization is used.
+    $definition = array(
+      'type' => 'string',
+      'constraints' => array(
+        'Length' => array('min' => 10),
+      ),
+    );
+    $violations = $this->typedData->create($definition, "short")->validate();
+    $this->assertEqual($violations->count(), 1);
+    $message = t('This value is too short. It should have %limit characters or more.', array('%limit' => 10));
+    $this->assertEqual($violations[0]->getMessage(), $message, 'Translated violation message retrieved.');
+
     // Test having multiple violations.
     $definition = array(
       'type' => 'integer',