diff --git a/farben.c b/farben.c
new file mode 100644
index 0000000..ebe89d9
--- /dev/null
+++ b/farben.c
@@ -0,0 +1,68 @@
+#include <stdio.h>
+#include <ctype.h>
+
+// Vergleich zweier Strings ohne Beachtung der Groß-/Kleinschreibung
+int string_equals_ignore_case(const char *a, const char *b) {
+    while (*a && *b) {
+        if (tolower((unsigned char)*a) != tolower((unsigned char)*b)) {
+            return 0;
+        }
+        a++;
+        b++;
+    }
+    return *a == *b;
+}
+
+// Prüft, ob die Eingabe eine erlaubte Grundfarbe ist
+int is_valid_color(const char *color) {
+    return string_equals_ignore_case(color, "Rot") ||
+           string_equals_ignore_case(color, "Gruen") ||
+           string_equals_ignore_case(color, "Violett");
+}
+
+// Gibt die Mischfarbe zurück
+const char* mix_colors(const char *color1, const char *color2) {
+    if (string_equals_ignore_case(color1, "Rot") && string_equals_ignore_case(color2, "Rot")) {
+        return "Rot";
+    }
+    if ((string_equals_ignore_case(color1, "Rot") && string_equals_ignore_case(color2, "Gruen")) ||
+        (string_equals_ignore_case(color1, "Gruen") && string_equals_ignore_case(color2, "Rot"))) {
+        return "Gelb";
+    }
+    if ((string_equals_ignore_case(color1, "Rot") && string_equals_ignore_case(color2, "Violett")) ||
+        (string_equals_ignore_case(color1, "Violett") && string_equals_ignore_case(color2, "Rot"))) {
+        return "Purpur";
+    }
+    if (string_equals_ignore_case(color1, "Gruen") && string_equals_ignore_case(color2, "Gruen")) {
+        return "Gruen";
+    }
+    if ((string_equals_ignore_case(color1, "Gruen") && string_equals_ignore_case(color2, "Violett")) ||
+        (string_equals_ignore_case(color1, "Violett") && string_equals_ignore_case(color2, "Gruen"))) {
+        return "Blau";
+    }
+    if (string_equals_ignore_case(color1, "Violett") && string_equals_ignore_case(color2, "Violett")) {
+        return "Violett";
+    }
+}
+
+int main() {
+    char user_colors[2][20]; // Platz für 2 Farben
+    int attempts = 0;
+
+    while (attempts < 2) {
+        printf("Bitte gib eine Grundfarbe (Rot, Gruen oder Violett) ein: ");
+        scanf("%19s", user_colors[attempts]);
+        while (getchar() != '\n'); // Eingabepuffer leeren
+
+        if (is_valid_color(user_colors[attempts])) {
+            printf("Du hast %s gewaehlt.\n", user_colors[attempts]);
+            attempts++;
+        } else {
+            printf("Ungueltige Eingabe. Bitte versuche es erneut.\n");
+        }
+    }
+
+    printf("Die Mischfarbe ist dann: %s\n", mix_colors(user_colors[0], user_colors[1]));
+
+    return 0;
+}
\ No newline at end of file