Two Hearts is a colour swap. The Heart of the top left is green and magenta, and the heart on the bottom right is red and cyan. However when viewed through a prism, the colours swap magenta becomes red and red becomes magenta, green becomes cyan, and cyan becomes green.
When the image above is viewed correctly through a prism, you should see the resulting image below.
![](https://stevewilding.com/wp-content/uploads/2022/09/two-hearts-revealed-1024x1024.jpg)