diff --git a/src/Exceptions/HexTooLongException.php b/src/Exceptions/HexTooLongException.php
index 0828d1e..5e9e5fb 100644
--- a/src/Exceptions/HexTooLongException.php
+++ b/src/Exceptions/HexTooLongException.php
@@ -1,5 +1,7 @@
-<?php namespace LasseRafn\Hexer\Exceptions;
+<?php
+
+namespace LasseRafn\Hexer\Exceptions;
 
 class HexTooLongException extends \Exception
 {
-}
\ No newline at end of file
+}
diff --git a/src/Exceptions/HexTooShortException.php b/src/Exceptions/HexTooShortException.php
index 7aa8b0f..8dd6bc8 100644
--- a/src/Exceptions/HexTooShortException.php
+++ b/src/Exceptions/HexTooShortException.php
@@ -1,5 +1,7 @@
-<?php namespace LasseRafn\Hexer\Exceptions;
+<?php
+
+namespace LasseRafn\Hexer\Exceptions;
 
 class HexTooShortException extends \Exception
 {
-}
\ No newline at end of file
+}
diff --git a/src/Exceptions/PercentageTooHighException.php b/src/Exceptions/PercentageTooHighException.php
index 7c4dd08..a994609 100644
--- a/src/Exceptions/PercentageTooHighException.php
+++ b/src/Exceptions/PercentageTooHighException.php
@@ -1,5 +1,7 @@
-<?php namespace LasseRafn\Hexer\Exceptions;
+<?php
+
+namespace LasseRafn\Hexer\Exceptions;
 
 class PercentageTooHighException extends \Exception
 {
-}
\ No newline at end of file
+}
diff --git a/src/Exceptions/PercentageTooLowException.php b/src/Exceptions/PercentageTooLowException.php
index 24d0929..07f359a 100644
--- a/src/Exceptions/PercentageTooLowException.php
+++ b/src/Exceptions/PercentageTooLowException.php
@@ -1,5 +1,7 @@
-<?php namespace LasseRafn\Hexer\Exceptions;
+<?php
+
+namespace LasseRafn\Hexer\Exceptions;
 
 class PercentageTooLowException extends \Exception
 {
-}
\ No newline at end of file
+}
diff --git a/src/Hex.php b/src/Hex.php
index 5f50cec..fd224e4 100644
--- a/src/Hex.php
+++ b/src/Hex.php
@@ -9,78 +9,73 @@
 
 class Hex
 {
-	private $hex;
-	private $brightnessModifier;
-
-	const HEX_MIN_LENGTH = 3;
-	const HEX_MAX_LENGTH = 6;
-
-	public function __construct( $hex )
-	{
-		$this->hex                = $hex;
-		$this->brightnessModifier = new HexBrightnessModifier();
-
-		$this->validateHex();
-	}
-
-	/**
-	 * @param integer $percentage
-	 *
-	 * @return string
-	 */
-	public function lighten( $percentage = 0 )
-	{
-		$this->validatePercentage($percentage);
-
-		if ( $percentage === 0 )
-		{
-			return $this->hex;
-		}
-
-		return $this->brightnessModifier->adjustBrightness( $this->hex, $percentage );
-	}
-
-	/**
-	 * @param integer $percentage
-	 *
-	 * @return string
-	 */
-	public function darken( $percentage = 0 )
-	{
-		$this->validatePercentage($percentage);
-
-		if ( $percentage === 0 )
-		{
-			return $this->hex;
-		}
-
-		return $this->brightnessModifier->adjustBrightness( $this->hex, $percentage * -1 );
-	}
-
-	private function validatePercentage( $percentage )
-	{
-		if ( $percentage < 0 )
-		{
-			throw new PercentageTooLowException( "The percentage ({$percentage}) is below zero (0)" );
-		}
-
-		if ( $percentage > 100 )
-		{
-			throw new PercentageTooHighException( "The percentage ({$percentage}) is above 100" );
-		}
-	}
-
-	private function validateHex() {
-		$hex = str_replace( '#', '', $this->hex );
-
-		if ( strlen( $hex ) < self::HEX_MIN_LENGTH )
-		{
-			throw new HexTooShortException( "The hex ({$hex}) was too short. Minimum length is: " . self::HEX_MIN_LENGTH . " characters, without hashtag." );
-		}
-
-		if ( strlen( $hex ) > self::HEX_MAX_LENGTH )
-		{
-			throw new HexTooLongException( "The hex ({$hex}) was too long. Maximum length is: " . self::HEX_MAX_LENGTH . " characters, without hashtag." );
-		}
-	}
+    private $hex;
+    private $brightnessModifier;
+
+    const HEX_MIN_LENGTH = 3;
+    const HEX_MAX_LENGTH = 6;
+
+    public function __construct($hex)
+    {
+        $this->hex = $hex;
+        $this->brightnessModifier = new HexBrightnessModifier();
+
+        $this->validateHex();
+    }
+
+    /**
+     * @param int $percentage
+     *
+     * @return string
+     */
+    public function lighten($percentage = 0)
+    {
+        $this->validatePercentage($percentage);
+
+        if ($percentage === 0) {
+            return $this->hex;
+        }
+
+        return $this->brightnessModifier->adjustBrightness($this->hex, $percentage);
+    }
+
+    /**
+     * @param int $percentage
+     *
+     * @return string
+     */
+    public function darken($percentage = 0)
+    {
+        $this->validatePercentage($percentage);
+
+        if ($percentage === 0) {
+            return $this->hex;
+        }
+
+        return $this->brightnessModifier->adjustBrightness($this->hex, $percentage * -1);
+    }
+
+    private function validatePercentage($percentage)
+    {
+        if ($percentage < 0) {
+            throw new PercentageTooLowException("The percentage ({$percentage}) is below zero (0)");
+        }
+
+        if ($percentage > 100) {
+            throw new PercentageTooHighException("The percentage ({$percentage}) is above 100");
+        }
+    }
+
+    private function validateHex()
+    {
+        $hex = str_replace('#', '', $this->hex);
+
+        if (strlen($hex) < self::HEX_MIN_LENGTH) {
+            throw new HexTooShortException("The hex ({$hex}) was too short. Minimum length is: ".self::HEX_MIN_LENGTH.' characters, without hashtag.');
+        }
+
+        if (strlen($hex) > self::HEX_MAX_LENGTH) {
+            throw new HexTooLongException("The hex ({$hex}) was too long. Maximum length is: ".self::HEX_MAX_LENGTH.' characters, without hashtag.');
+        }
+    }
 }
diff --git a/src/HexBrightnessModifier.php b/src/HexBrightnessModifier.php
index b5151fa..b943691 100644
--- a/src/HexBrightnessModifier.php
+++ b/src/HexBrightnessModifier.php
@@ -4,88 +4,85 @@
 
 class HexBrightnessModifier
 {
-	const STEPS     = 255;
-	const STEPS_MAX = 255;
-	const STEPS_MIN = -255;
-
-	private $hadHashtag = false;
-
-	/**
-	 * @param string  $hex
-	 * @param integer $percentage
-	 *
-	 * @return string
-	 */
-	public function adjustBrightness( $hex, $percentage )
-	{
-		$steps = $this->generateSteps( $percentage );
-
-		$hex = $this->parseHex( $hex );
-		$hex = $this->adjustHex( $hex, $steps );
-
-		// Append hashtag if was inputted with a hashtag
-		if ( $this->hadHashtag )
-		{
-			$hex = "#{$hex}";
-		}
-
-		return $hex;
-	}
-
-	/**
-	 * @param integer $percentage
-	 *
-	 * @return integer
-	 */
-	private function generateSteps( $percentage )
-	{
-		$steps = (int) round( ( $percentage / 100 ) * self::STEPS );
-		$steps = max( self::STEPS_MIN, min( self::STEPS_MAX, $steps ) );
-
-		return $steps;
-	}
-
-	/**
-	 * @param string $hex
-	 *
-	 * @return mixed|string
-	 */
-	private function parseHex( $hex )
-	{
-		$this->hadHashtag = $hex[0] === '#';
-
-		$hex = str_replace( '#', '', $hex );
-		$hex = strtolower( $hex );
-
-		if ( strlen( $hex ) === 3 )
-		{
-			$hex = str_repeat( substr( $hex, 0, 1 ), 2 ) . str_repeat( substr( $hex, 1, 1 ), 2 ) . str_repeat( substr( $hex, 2, 1 ), 2 );
-		}
-
-		return $hex;
-	}
-
-	/**
-	 * @param string  $hex
-	 * @param integer $steps
-	 *
-	 * @return string
-	 */
-	private function adjustHex( $hex, $steps )
-	{
-		$return = '';
-		$parts  = str_split( $hex, 2 );
-
-		foreach ( $parts as $color )
-		{
-			$color = hexdec( $color );
-			$color = max( 0, min( 255, $color + $steps ) );
-
-			$return .= str_pad( dechex( $color ), 2, '0', STR_PAD_LEFT );
-		}
-
-		$return = strtolower( $return );
-
-		return $return;
-	}
+    const STEPS = 255;
+    const STEPS_MAX = 255;
+    const STEPS_MIN = -255;
+
+    private $hadHashtag = false;
+
+    /**
+     * @param string $hex
+     * @param int    $percentage
+     *
+     * @return string
+     */
+    public function adjustBrightness($hex, $percentage)
+    {
+        $steps = $this->generateSteps($percentage);
+
+        $hex = $this->parseHex($hex);
+        $hex = $this->adjustHex($hex, $steps);
+
+        // Append hashtag if was inputted with a hashtag
+        if ($this->hadHashtag) {
+            $hex = "#{$hex}";
+        }
+
+        return $hex;
+    }
+
+    /**
+     * @param int $percentage
+     *
+     * @return int
+     */
+    private function generateSteps($percentage)
+    {
+        $steps = (int) round(($percentage / 100) * self::STEPS);
+        $steps = max(self::STEPS_MIN, min(self::STEPS_MAX, $steps));
+
+        return $steps;
+    }
+
+    /**
+     * @param string $hex
+     *
+     * @return mixed|string
+     */
+    private function parseHex($hex)
+    {
+        $this->hadHashtag = $hex[0] === '#';
+
+        $hex = str_replace('#', '', $hex);
+        $hex = strtolower($hex);
+
+        if (strlen($hex) === 3) {
+            $hex = str_repeat(substr($hex, 0, 1), 2).str_repeat(substr($hex, 1, 1), 2).str_repeat(substr($hex, 2, 1), 2);
+        }
+
+        return $hex;
+    }
+
+    /**
+     * @param string $hex
+     * @param int    $steps
+     *
+     * @return string
+     */
+    private function adjustHex($hex, $steps)
+    {
+        $return = '';
+        $parts = str_split($hex, 2);
+
+        foreach ($parts as $color) {
+            $color = hexdec($color);
+            $color = max(0, min(255, $color + $steps));
+
+            $return .= str_pad(dechex($color), 2, '0', STR_PAD_LEFT);
+        }
+
+        $return = strtolower($return);
+
+        return $return;
+    }
 }
diff --git a/tests/HexModifierTest.php b/tests/HexModifierTest.php
index 87589d2..18dde5b 100644
--- a/tests/HexModifierTest.php
+++ b/tests/HexModifierTest.php
@@ -4,104 +4,107 @@
 
 class HexModifierTest extends TestCase
 {
-	public function test_can_darken_color()
-	{
-		// Regular
-		$hex = new \LasseRafn\Hexer\Hex( '#fff' );
+    public function test_can_darken_color()
+    {
+        // Regular
+        $hex = new \LasseRafn\Hexer\Hex('#fff');
 
-		$this->assertEquals( '#d9d9d9', $hex->darken( 15 ) );
+        $this->assertEquals('#d9d9d9', $hex->darken(15));
 
-		// With uppercase
-		$hex = new \LasseRafn\Hexer\Hex( '#FFF' );
+        // With uppercase
+        $hex = new \LasseRafn\Hexer\Hex('#FFF');
 
-		$this->assertEquals( '#d9d9d9', $hex->darken( 15 ) );
+        $this->assertEquals('#d9d9d9', $hex->darken(15));
 
-		// With 6 characters
-		$hex = new \LasseRafn\Hexer\Hex( '#ffffff' );
+        // With 6 characters
+        $hex = new \LasseRafn\Hexer\Hex('#ffffff');
 
-		$this->assertEquals( '#d9d9d9', $hex->darken( 15 ) );
+        $this->assertEquals('#d9d9d9', $hex->darken(15));
 
-		// Without hashtag
-		$hex = new \LasseRafn\Hexer\Hex( 'fff' );
+        // Without hashtag
+        $hex = new \LasseRafn\Hexer\Hex('fff');
 
-		$this->assertEquals( 'd9d9d9', $hex->darken( 15 ) );
-	}
+        $this->assertEquals('d9d9d9', $hex->darken(15));
+    }
 
-	public function test_can_lighten_color()
-	{
-		// Regular
-		$hex = new \LasseRafn\Hexer\Hex( '#333' );
+    public function test_can_lighten_color()
+    {
+        // Regular
+        $hex = new \LasseRafn\Hexer\Hex('#333');
 
-		$this->assertEquals( '#595959', $hex->lighten( 15 ) );
+        $this->assertEquals('#595959', $hex->lighten(15));
 
-		// With uppercase
-		$hex = new \LasseRafn\Hexer\Hex( '#333' );
+        // With uppercase
+        $hex = new \LasseRafn\Hexer\Hex('#333');
 
-		$this->assertEquals( '#595959', $hex->lighten( 15 ) );
+        $this->assertEquals('#595959', $hex->lighten(15));
 
-		// With 6 characters
-		$hex = new \LasseRafn\Hexer\Hex( '#333333' );
+        // With 6 characters
+        $hex = new \LasseRafn\Hexer\Hex('#333333');
 
-		$this->assertEquals( '#595959', $hex->lighten( 15 ) );
+        $this->assertEquals('#595959', $hex->lighten(15));
 
-		// Without hashtag
-		$hex = new \LasseRafn\Hexer\Hex( '333' );
+        // Without hashtag
+        $hex = new \LasseRafn\Hexer\Hex('333');
 
-		$this->assertEquals( '595959', $hex->lighten( 15 ) );
-	}
+        $this->assertEquals('595959', $hex->lighten(15));
+    }
 
-	public function test_can_modify_colors_beside_black_and_white()
-	{
-		// Regular
-		$hex = new \LasseRafn\Hexer\Hex( '#ff000' );
+    public function test_can_modify_colors_beside_black_and_white()
+    {
+        // Regular
+        $hex = new \LasseRafn\Hexer\Hex('#ff000');
 
-		$this->assertEquals( '#ff2626', $hex->lighten( 15 ) );
+        $this->assertEquals('#ff2626', $hex->lighten(15));
 
-		// With uppercase
-		$hex = new \LasseRafn\Hexer\Hex( '#5e77b0' );
+        // With uppercase
+        $hex = new \LasseRafn\Hexer\Hex('#5e77b0');
 
-		$this->assertEquals( '#2b447d', $hex->darken( 20 ) );
+        $this->assertEquals('#2b447d', $hex->darken(20));
 
-		// With large percentages
-		$hex = new \LasseRafn\Hexer\Hex( '21ed4a' );
+        // With large percentages
+        $hex = new \LasseRafn\Hexer\Hex('21ed4a');
 
-		$this->assertEquals( 'd4fffd', $hex->lighten( 70 ) );
-	}
+        $this->assertEquals('d4fffd', $hex->lighten(70));
+    }
 
-	public function test_will_fail_with_too_long_hex_input() {
-		$this->expectException(\LasseRafn\Hexer\Exceptions\HexTooLongException::class);
+    public function test_will_fail_with_too_long_hex_input()
+    {
+        $this->expectException(\LasseRafn\Hexer\Exceptions\HexTooLongException::class);
 
-		new \LasseRafn\Hexer\Hex( '#fffffff' );
-		new \LasseRafn\Hexer\Hex( 'fffffff' );
-	}
+        new \LasseRafn\Hexer\Hex('#fffffff');
+        new \LasseRafn\Hexer\Hex('fffffff');
+    }
 
-	public function test_will_fail_with_too_short_hex_input() {
-		$this->expectException(\LasseRafn\Hexer\Exceptions\HexTooShortException::class);
+    public function test_will_fail_with_too_short_hex_input()
+    {
+        $this->expectException(\LasseRafn\Hexer\Exceptions\HexTooShortException::class);
 
-		new \LasseRafn\Hexer\Hex( '#22' );
-		new \LasseRafn\Hexer\Hex( '22' );
-	}
+        new \LasseRafn\Hexer\Hex('#22');
+        new \LasseRafn\Hexer\Hex('22');
+    }
 
-	public function test_will_fail_with_too_low_percentage_input()
-	{
-		$this->expectException( \LasseRafn\Hexer\Exceptions\PercentageTooLowException::class );
+    public function test_will_fail_with_too_low_percentage_input()
+    {
+        $this->expectException(\LasseRafn\Hexer\Exceptions\PercentageTooLowException::class);
 
-		$hex = new \LasseRafn\Hexer\Hex( '#fff' );
-		$hex->lighten(-10);
-	}
+        $hex = new \LasseRafn\Hexer\Hex('#fff');
+        $hex->lighten(-10);
+    }
 
-	public function test_will_fail_with_too_high_percentage_input()
-	{
-		$this->expectException( \LasseRafn\Hexer\Exceptions\PercentageTooHighException::class );
+    public function test_will_fail_with_too_high_percentage_input()
+    {
+        $this->expectException(\LasseRafn\Hexer\Exceptions\PercentageTooHighException::class);
 
-		$hex = new \LasseRafn\Hexer\Hex( '#fff' );
-		$hex->lighten(101);
-	}
+        $hex = new \LasseRafn\Hexer\Hex('#fff');
+        $hex->lighten(101);
+    }
 
-	public function test_will_return_initial_hex_with_zero_percentage() {
-		$hex = new \LasseRafn\Hexer\Hex('#fff');
+    public function test_will_return_initial_hex_with_zero_percentage()
+    {
+        $hex = new \LasseRafn\Hexer\Hex('#fff');
 
-		$this->assertEquals('#fff', $hex->lighten());
-		$this->assertEquals('#fff', $hex->darken());
-	}
+        $this->assertEquals('#fff', $hex->lighten());
+        $this->assertEquals('#fff', $hex->darken());
+    }
 }