diff --git a/Sources/SwiftUICharts/Helpers.swift b/Sources/SwiftUICharts/Helpers.swift
index d6b4b78..9f7e929 100644
--- a/Sources/SwiftUICharts/Helpers.swift
+++ b/Sources/SwiftUICharts/Helpers.swift
@@ -143,9 +143,9 @@ class TestData{
 extension Color {
     init(hexString: String) {
         let hex = hexString.trimmingCharacters(in: CharacterSet.alphanumerics.inverted)
-        var int = UInt32()
-        Scanner(string: hex).scanHexInt32(&int)
-        let r, g, b: UInt32
+        var int = UInt64()
+        Scanner(string: hex).scanHexInt64(&int)
+        let r, g, b: UInt64
         switch hex.count {
         case 3: // RGB (12-bit)
             (r, g, b) = ((int >> 8) * 17, (int >> 4 & 0xF) * 17, (int & 0xF) * 17)