Discoloration when exporting a file as a PDF

Hi all, I’m having trouble exporting a file in PDF. The original color was supposed to be more vivid (see left image), it works fine when I downloaded it as a png or jpeg. But when I exported in PDF, it becomes very grainy and grey-ish (right image). The color space setting is unmanaged. Does anyone know what might be the problem?

1 Like

Also having this problem on random pages in my pdfs. Some export perfectly fine where others export cmyk-ish

Figma, please help