: This is often a "Little-Endian" vs. "Big-Endian" issue. If your reds look blue, try toggling the endianness setting in the converter or swapping bytes in your code with pixel = (pixel << 8) | (pixel >> 8); Memory Errors
This trips up many beginners. Your display controller (e.g., ILI9341, SSD1306) expects either:
Any questions about palette optimization or custom output templates – ask below.