illustrator not changing from cymk to rgb

[LuntkGnius]

i was working in a RGB format and somehow i did something in color setting in illustrator 2020. 

now its not reverting to RGB whatever i change to sRGB in color stting and profiles also i changed the document to RGB. 

whenever i exporting this document to png or svg its exporting as cymk(dull print colors). but when i exporting as jpeg it was successfully in RGB. 

 This is the color settinng in my mac

[Monika Gause · Accepted solution]

The document mode is changed using File > Document color mode > RGB resp CMYK

When you change from RGB to CMYK, of course colors get converted to something that can be reproduced in CMYK color mode. But when you change to RGB again, then don't expect colors to get as bright as they used to be. They won't.

PNG cannot be CMYK. The file format doesn't support it.