diff --git a/src/BarcodeGeneratorDynamicHTML.php b/src/BarcodeGeneratorDynamicHTML.php
index c08a4ed..5cebc2b 100644
--- a/src/BarcodeGeneratorDynamicHTML.php
+++ b/src/BarcodeGeneratorDynamicHTML.php
@@ -3,6 +3,7 @@
 namespace Picqer\Barcode;
 
 use Picqer\Barcode\Exceptions\UnknownTypeException;
+use Picqer\Barcode\Helpers\ColorHelper;
 
 class BarcodeGeneratorDynamicHTML extends BarcodeGenerator
 {
@@ -21,7 +22,7 @@ public function getBarcode(string $barcode, $type, string $foregroundColor = 'bl
         $barcodeData = $this->getBarcodeData($barcode, $type);
 
         $renderer = new \Picqer\Barcode\Renderers\DynamicHtmlRenderer();
-        $renderer->setForegroundColor($foregroundColor);
+        $renderer->setForegroundColor(ColorHelper::getArrayFromColorString($foregroundColor));
 
         return $renderer->render($barcodeData);
     }
diff --git a/src/BarcodeGeneratorHTML.php b/src/BarcodeGeneratorHTML.php
index bc30f25..01b8b95 100644
--- a/src/BarcodeGeneratorHTML.php
+++ b/src/BarcodeGeneratorHTML.php
@@ -3,6 +3,7 @@
 namespace Picqer\Barcode;
 
 use Picqer\Barcode\Exceptions\UnknownTypeException;
+use Picqer\Barcode\Helpers\ColorHelper;
 
 class BarcodeGeneratorHTML extends BarcodeGenerator
 {
@@ -25,7 +26,7 @@ public function getBarcode(string $barcode, $type, int $widthFactor = 2, int $he
         $width = round(($barcodeData->getWidth() * $widthFactor), 3);
 
         $renderer = new \Picqer\Barcode\Renderers\HtmlRenderer();
-        $renderer->setForegroundColor($foregroundColor);
+        $renderer->setForegroundColor(ColorHelper::getArrayFromColorString($foregroundColor));
 
         return $renderer->render($barcodeData, $width, $height);
     }
diff --git a/src/BarcodeGeneratorJPG.php b/src/BarcodeGeneratorJPG.php
index 2e27001..51eaf48 100644
--- a/src/BarcodeGeneratorJPG.php
+++ b/src/BarcodeGeneratorJPG.php
@@ -34,7 +34,7 @@ public function getBarcode(string $barcode, $type, int $widthFactor = 2, int $he
             }
         }
 
-        return $renderer->render($barcodeData, $widthFactor, $height);
+        return $renderer->render($barcodeData, $barcodeData->getWidth() * $widthFactor, $height);
     }
 
     /**
diff --git a/src/BarcodeGeneratorPNG.php b/src/BarcodeGeneratorPNG.php
index 31edc56..f8f3d0c 100644
--- a/src/BarcodeGeneratorPNG.php
+++ b/src/BarcodeGeneratorPNG.php
@@ -34,7 +34,7 @@ public function getBarcode(string $barcode, $type, int $widthFactor = 2, int $he
             }
         }
 
-        return $renderer->render($barcodeData, $widthFactor, $height);
+        return $renderer->render($barcodeData, $barcodeData->getWidth() * $widthFactor, $height);
     }
 
     /**
diff --git a/src/BarcodeGeneratorSVG.php b/src/BarcodeGeneratorSVG.php
index ef7d63f..64b725e 100644
--- a/src/BarcodeGeneratorSVG.php
+++ b/src/BarcodeGeneratorSVG.php
@@ -3,6 +3,7 @@
 namespace Picqer\Barcode;
 
 use Picqer\Barcode\Exceptions\UnknownTypeException;
+use Picqer\Barcode\Helpers\ColorHelper;
 
 class BarcodeGeneratorSVG extends BarcodeGenerator
 {
@@ -25,7 +26,7 @@ public function getBarcode(string $barcode, $type, float $widthFactor = 2, float
         $width = round(($barcodeData->getWidth() * $widthFactor), 3);
 
         $renderer = new \Picqer\Barcode\Renderers\SvgRenderer();
-        $renderer->setForegroundColor($foregroundColor);
+        $renderer->setForegroundColor(ColorHelper::getArrayFromColorString($foregroundColor));
 
         return $renderer->render($barcodeData, $width, $height);
     }
diff --git a/src/Exceptions/UnknownColorException.php b/src/Exceptions/UnknownColorException.php
new file mode 100644
index 0000000..0401857
--- /dev/null
+++ b/src/Exceptions/UnknownColorException.php
@@ -0,0 +1,5 @@
+<?php
+
+namespace Picqer\Barcode\Exceptions;
+
+class UnknownColorException extends BarcodeException {}
diff --git a/src/Helpers/ColorHelper.php b/src/Helpers/ColorHelper.php
new file mode 100644
index 0000000..52d348d
--- /dev/null
+++ b/src/Helpers/ColorHelper.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace Picqer\Barcode\Helpers;
+
+use Picqer\Barcode\Exceptions\UnknownColorException;
+
+class ColorHelper
+{
+    // Convert textual color values, to array of 3 colors 0-255
+    // Can be "red", "#333" or "#009945" styles
+    public static function getArrayFromColorString(string $color): array {
+        if ($color == 'black') {
+            return [0, 0, 0];
+        } elseif ($color == 'white') {
+            return [255, 255, 255];
+        } elseif ($color == 'red') {
+            return [255, 0, 0];
+        } elseif ($color == 'green') {
+            return [0, 255, 0];
+        } elseif ($color == 'blue') {
+            return [0, 0, 255];
+        } elseif ($color == 'yellow') {
+            return [255, 255, 0];
+        }
+
+        // #333 style
+        if (str_starts_with($color, '#') && strlen($color) === 4) {
+            return [
+                hexdec(substr($color, 1, 1) . substr($color, 1, 1)),
+                hexdec(substr($color, 2, 1) . substr($color, 2, 1)),
+                hexdec(substr($color, 3, 1) . substr($color, 3, 1)),
+            ];
+        }
+
+        // #009933 style
+        if (str_starts_with($color, '#') && strlen($color) === 7) {
+            return [
+                hexdec(substr($color, 1, 2)),
+                hexdec(substr($color, 2, 2)),
+                hexdec(substr($color, 3, 2)),
+            ];
+        }
+
+        throw new UnknownColorException('Only basic string-based colors are supported in v3.');
+    }
+}
diff --git a/tests/HtmlRendererTest.php b/tests/HtmlRendererTest.php
index 387a43e..2435886 100644
--- a/tests/HtmlRendererTest.php
+++ b/tests/HtmlRendererTest.php
@@ -29,7 +29,7 @@ public function test_html_barcode_generator_with_background()
         $barcode = (new Picqer\Barcode\Types\TypeCode128())->getBarcode('081231723897');
 
         $renderer = new Picqer\Barcode\Renderers\HtmlRenderer();
-        $renderer->setBackgroundColor('red');
+        $renderer->setBackgroundColor([255, 0, 0]);
         $generated = $renderer->render($barcode, $barcode->getWidth() * 2);
 
         $this->assertStringEqualsFile('tests/verified-files/081231723897-code128-red-background.html', $generated);
diff --git a/tests/JpgRendererTest.php b/tests/JpgRendererTest.php
index 46aa939..c6ca4c6 100644
--- a/tests/JpgRendererTest.php
+++ b/tests/JpgRendererTest.php
@@ -10,7 +10,7 @@ public function test_jpg_barcode_generator_can_generate_code_128_barcode()
 
         $renderer = new Picqer\Barcode\Renderers\JpgRenderer();
         $renderer->useGd();
-        $generated = $renderer->render($barcode);
+        $generated = $renderer->render($barcode, $barcode->getWidth() * 2);
 
         $imageInfo = getimagesizefromstring($generated);
 
@@ -27,7 +27,7 @@ public function test_jpg_barcode_generator_can_generate_code_39_barcode()
 
         $renderer = new Picqer\Barcode\Renderers\JpgRenderer();
         $renderer->useGd();
-        $generated = $renderer->render($barcode, 1);
+        $generated = $renderer->render($barcode, $barcode->getWidth());
 
         $imageInfo = getimagesizefromstring($generated);
 
@@ -43,7 +43,7 @@ public function test_jpg_barcode_generator_can_use_different_height()
 
         $renderer = new Picqer\Barcode\Renderers\JpgRenderer();
         $renderer->useGd();
-        $generated = $renderer->render($barcode, 2, 45);
+        $generated = $renderer->render($barcode, $barcode->getWidth() * 2, 45);
 
         $imageInfo = getimagesizefromstring($generated);
 
@@ -59,7 +59,7 @@ public function test_jpg_barcode_generator_can_use_different_width_factor()
 
         $renderer = new Picqer\Barcode\Renderers\JpgRenderer();
         $renderer->useGd();
-        $generated = $renderer->render($barcode, 5);
+        $generated = $renderer->render($barcode, $barcode->getWidth() * 5);
 
         $imageInfo = getimagesizefromstring($generated);
 
@@ -81,7 +81,7 @@ public function test_jpg_barcode_generator_can_generate_code_128_barcode_imagick
 
         $renderer = new Picqer\Barcode\Renderers\JpgRenderer();
         $renderer->useImagick();
-        $generated = $renderer->render($barcode);
+        $generated = $renderer->render($barcode, $barcode->getWidth() * 2);
 
         $imageInfo = getimagesizefromstring($generated);
 
@@ -101,7 +101,7 @@ public function test_jpg_barcode_generator_can_generate_code_39_barcode_imagick(
 
         $renderer = new Picqer\Barcode\Renderers\JpgRenderer();
         $renderer->useImagick();
-        $generated = $renderer->render($barcode, 1);
+        $generated = $renderer->render($barcode, $barcode->getWidth());
 
         $imageInfo = getimagesizefromstring($generated);
 
@@ -121,7 +121,7 @@ public function test_jpg_barcode_generator_can_use_different_height_imagick()
 
         $renderer = new Picqer\Barcode\Renderers\JpgRenderer();
         $renderer->useGd();
-        $generated = $renderer->render($barcode, 2, 45);
+        $generated = $renderer->render($barcode, $barcode->getWidth() * 2, 45);
 
         $imageInfo = getimagesizefromstring($generated);
 
@@ -141,7 +141,7 @@ public function test_jpg_barcode_generator_can_use_different_width_factor_imagic
 
         $renderer = new Picqer\Barcode\Renderers\JpgRenderer();
         $renderer->useGd();
-        $generated = $renderer->render($barcode, 5);
+        $generated = $renderer->render($barcode, $barcode->getWidth() * 5);
 
         $imageInfo = getimagesizefromstring($generated);
 
diff --git a/tests/PngRendererTest.php b/tests/PngRendererTest.php
index db253ce..fbb3e3c 100644
--- a/tests/PngRendererTest.php
+++ b/tests/PngRendererTest.php
@@ -22,7 +22,7 @@ public function test_png_barcode_generator_can_generate_code_39_barcode()
 
         $renderer = new Picqer\Barcode\Renderers\PngRenderer();
         $renderer->useGd();
-        $generated = $renderer->render($barcode, 1);
+        $generated = $renderer->render($barcode, $barcode->getWidth());
 
         $imageInfo = getimagesizefromstring($generated);
 
@@ -38,7 +38,7 @@ public function test_png_barcode_generator_can_use_different_height()
 
         $renderer = new Picqer\Barcode\Renderers\PngRenderer();
         $renderer->useGd();
-        $generated = $renderer->render($barcode, 2, 45);
+        $generated = $renderer->render($barcode, $barcode->getWidth() * 2, 45);
 
         $imageInfo = getimagesizefromstring($generated);
 
@@ -54,7 +54,7 @@ public function test_png_barcode_generator_can_use_different_width_factor()
 
         $renderer = new Picqer\Barcode\Renderers\PngRenderer();
         $renderer->useGd();
-        $generated = $renderer->render($barcode, 5);
+        $generated = $renderer->render($barcode, $barcode->getWidth() * 5);
 
         $imageInfo = getimagesizefromstring($generated);
 
@@ -76,7 +76,7 @@ public function test_png_barcode_generator_can_generate_code_128_barcode_imagick
 
         $renderer = new Picqer\Barcode\Renderers\PngRenderer();
         $renderer->useImagick();
-        $generated = $renderer->render($barcode);
+        $generated = $renderer->render($barcode, $barcode->getWidth() * 2);
 
         $this->assertEquals('PNG', substr($generated, 1, 3));
     }
@@ -91,7 +91,7 @@ public function test_png_barcode_generator_can_generate_code_39_barcode_imagick(
 
         $renderer = new Picqer\Barcode\Renderers\PngRenderer();
         $renderer->useImagick();
-        $generated = $renderer->render($barcode, 1);
+        $generated = $renderer->render($barcode, $barcode->getWidth());
 
         $imageInfo = getimagesizefromstring($generated);
 
@@ -111,7 +111,7 @@ public function test_png_barcode_generator_can_use_different_height_imagick()
 
         $renderer = new Picqer\Barcode\Renderers\PngRenderer();
         $renderer->useGd();
-        $generated = $renderer->render($barcode, 2, 45);
+        $generated = $renderer->render($barcode, $barcode->getWidth() * 2, 45);
 
         $imageInfo = getimagesizefromstring($generated);
 
@@ -131,7 +131,7 @@ public function test_png_barcode_generator_can_use_different_width_factor_imagic
 
         $renderer = new Picqer\Barcode\Renderers\PngRenderer();
         $renderer->useGd();
-        $generated = $renderer->render($barcode, 5);
+        $generated = $renderer->render($barcode, $barcode->getWidth() * 5);
 
         $imageInfo = getimagesizefromstring($generated);
 
diff --git a/tests/SvgRendererTest.php b/tests/SvgRendererTest.php
index a8d73e6..984d034 100644
--- a/tests/SvgRendererTest.php
+++ b/tests/SvgRendererTest.php
@@ -62,7 +62,7 @@ public function test_svg_barcode_generator_can_use_background_color()
         $barcode = (new Picqer\Barcode\Types\TypeEan13())->getBarcode('081231723897');
 
         $renderer = new Picqer\Barcode\Renderers\SvgRenderer();
-        $renderer->setBackgroundColor('red');
+        $renderer->setBackgroundColor([255, 0, 0]);
         $generated = $renderer->render($barcode, 190);
 
         $this->assertStringEqualsFile('tests/verified-files/081231723897-ean13-red-background.svg', $generated);