diff --git a/CHANGELOG.md b/CHANGELOG.md
index b0d5ac441..0937a2157 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@
 ### Fixes
 - node: throw error when getting context with an invalid account id
 - node: throw error when instanciating a wrapper class on `null` (Context, Message, Chat, ChatList and so on)
+- use same contact-color if email address differ only in upper-/lowercase #3327
 
 ### Removed
 - node: remove unmaintained coverage scripts
diff --git a/src/chat.rs b/src/chat.rs
index 55c815d77..83f7b61fb 100644
--- a/src/chat.rs
+++ b/src/chat.rs
@@ -4905,6 +4905,22 @@ mod tests {
         Ok(())
     }
 
+    #[async_std::test]
+    async fn test_chat_get_color() -> Result<()> {
+        let t = TestContext::new().await;
+        let chat_id = create_group_chat(&t, ProtectionStatus::Unprotected, "a chat").await?;
+        let color1 = Chat::load_from_db(&t, chat_id).await?.get_color(&t).await?;
+        assert_eq!(color1, 0x008772);
+
+        // upper-/lowercase makes a difference for the colors, these are different groups
+        // (in contrast to email addresses, where upper-/lowercase is ignored in practise)
+        let t = TestContext::new().await;
+        let chat_id = create_group_chat(&t, ProtectionStatus::Unprotected, "A CHAT").await?;
+        let color2 = Chat::load_from_db(&t, chat_id).await?.get_color(&t).await?;
+        assert_ne!(color2, color1);
+        Ok(())
+    }
+
     async fn test_sticker(filename: &str, bytes: &[u8], w: i32, h: i32) -> Result<()> {
         let alice = TestContext::new_alice().await;
         let bob = TestContext::new_bob().await;
diff --git a/src/contact.rs b/src/contact.rs
index 54f8ab468..72a5c66df 100644
--- a/src/contact.rs
+++ b/src/contact.rs
@@ -1082,7 +1082,7 @@ impl Contact {
     /// and can be used for an fallback avatar with white initials
     /// as well as for headlines in bubbles of group chats.
     pub fn get_color(&self) -> u32 {
-        str_to_color(&self.addr)
+        str_to_color(&self.addr.to_lowercase())
     }
 
     /// Gets the contact's status.
@@ -1946,6 +1946,25 @@ mod tests {
         assert_eq!(id, Some(ContactId::SELF));
     }
 
+    #[async_std::test]
+    async fn test_contact_get_color() -> Result<()> {
+        let t = TestContext::new().await;
+        let contact_id = Contact::create(&t, "name", "name@example.net").await?;
+        let color1 = Contact::get_by_id(&t, contact_id).await?.get_color();
+        assert_eq!(color1, 0xA739FF);
+
+        let t = TestContext::new().await;
+        let contact_id = Contact::create(&t, "prename name", "name@example.net").await?;
+        let color2 = Contact::get_by_id(&t, contact_id).await?.get_color();
+        assert_eq!(color2, color1);
+
+        let t = TestContext::new().await;
+        let contact_id = Contact::create(&t, "Name", "nAme@exAmple.NET").await?;
+        let color3 = Contact::get_by_id(&t, contact_id).await?.get_color();
+        assert_eq!(color3, color1);
+        Ok(())
+    }
+
     #[async_std::test]
     async fn test_contact_get_encrinfo() -> Result<()> {
         let alice = TestContext::new_alice().await;