diff --git a/src/Monolog/Handler/Slack/SlackRecord.php b/src/Monolog/Handler/Slack/SlackRecord.php
index 95318849..cc8493c1 100644
--- a/src/Monolog/Handler/Slack/SlackRecord.php
+++ b/src/Monolog/Handler/Slack/SlackRecord.php
@@ -25,6 +25,14 @@ use Monolog\Formatter\FormatterInterface;
  */
 class SlackRecord
 {
+    const COLOR_DANGER = 'danger';
+
+    const COLOR_WARNING = 'warning';
+
+    const COLOR_GOOD = 'good';
+
+    const COLOR_DEFAULT = '#e3e4e6';
+
     /**
      * Slack channel (encoded ID or name)
      * @var string
@@ -194,13 +202,13 @@ class SlackRecord
     {
         switch (true) {
             case $level >= Logger::ERROR:
-                return 'danger';
+                return self::COLOR_DANGER;
             case $level >= Logger::WARNING:
-                return 'warning';
+                return self::COLOR_WARNING;
             case $level >= Logger::INFO:
-                return 'good';
+                return self::COLOR_GOOD;
             default:
-                return '#e3e4e6';
+                return self::COLOR_DEFAULT;
         }
     }
 
diff --git a/tests/Monolog/Handler/SlackHandlerTest.php b/tests/Monolog/Handler/SlackHandlerTest.php
index a1fd8721..a2c98792 100644
--- a/tests/Monolog/Handler/SlackHandlerTest.php
+++ b/tests/Monolog/Handler/SlackHandlerTest.php
@@ -14,6 +14,7 @@ namespace Monolog\Handler;
 use Monolog\TestCase;
 use Monolog\Logger;
 use Monolog\Formatter\LineFormatter;
+use Monolog\Handler\Slack\SlackRecord;
 
 /**
  * @author Greg Kedzierski <greg@gregkedzierski.com>
@@ -111,14 +112,14 @@ class SlackHandlerTest extends TestCase
     public function provideLevelColors()
     {
         return array(
-            array(Logger::DEBUG,    '%23e3e4e6'),   // escaped #e3e4e6
-            array(Logger::INFO,     'good'),
-            array(Logger::NOTICE,   'good'),
-            array(Logger::WARNING,  'warning'),
-            array(Logger::ERROR,    'danger'),
-            array(Logger::CRITICAL, 'danger'),
-            array(Logger::ALERT,    'danger'),
-            array(Logger::EMERGENCY,'danger'),
+            array(Logger::DEBUG,    urlencode(SlackRecord::COLOR_DEFAULT)),
+            array(Logger::INFO,     SlackRecord::COLOR_GOOD),
+            array(Logger::NOTICE,   SlackRecord::COLOR_GOOD),
+            array(Logger::WARNING,  SlackRecord::COLOR_WARNING),
+            array(Logger::ERROR,    SlackRecord::COLOR_DANGER),
+            array(Logger::CRITICAL, SlackRecord::COLOR_DANGER),
+            array(Logger::ALERT,    SlackRecord::COLOR_DANGER),
+            array(Logger::EMERGENCY,SlackRecord::COLOR_DANGER),
         );
     }