The colors look good on my side with our discovery boards (tried on STM32U5G9J-DK2 and STM32F469I-DK). However, when purple is placed over red, I occasionally experience an optical illusion where it appears blue instead of purple.
Maybe better as say generated is fail, place some info in your question. Primary how object is rectangle image, box , svg, ...? MX never generate LCD control init usw.
I'm sure the issue lies in the code generated by TouchGFX or STM32CubeMX, because the problem persists even after I replaced it with a new screen. However, projects developed with other tools have normal screen colors.
