diff --git a/src/Transformer/CyanMagentaYellowKeyTransformer.php b/src/Transformer/CyanMagentaYellowKeyTransformer.php
index 8da4437..2b9ef9f 100644
--- a/src/Transformer/CyanMagentaYellowKeyTransformer.php
+++ b/src/Transformer/CyanMagentaYellowKeyTransformer.php
@@ -23,11 +23,23 @@ class CyanMagentaYellowKeyTransformer implements ColorModelTransformInterface
 
     public function toRedGreenBlue(): RedGreenBlue
     {
-        // TODO: Implement toRedGreenBlue() method.
+        $cyan = $this->color->getCyan();
+        $magenta = $this->color->getMagenta();
+        $yellow = $this->color->getYellow();
+        $key = $this->color->getKey();
+
+        $red = 0;
+        $green = 0;
+        $blue = 0;
+
+        return (new RedGreenBlue())
+            ->setRed($red)
+            ->setGreen($green)
+            ->setBlue($blue);
     }
 
     public function toCyanMagentaYellowKey(): CyanMagentaYellowKey
     {
-        // TODO: Implement toCyanMagentaYellowKey() method.
+        return clone $this->color;
     }
 }
\ No newline at end of file