Which one is Correct? (Intuitive declarative syntax or declarative intuitive syntax)

Which one is Correct? and why?

Intuitive declarative syntax

or

declarative intuitive syntax

Is there a rule to make these expressions?

This doesn't really fall into the English adjective order nightmare, so by default I'd assume one of the adjectives is modifying the other. If you turned the outermost attributive into a predicate, which one is what you were trying to say?

• (Intuitive declarative syntax) The declarative syntax is intuitive (for a novice programmer)!
• (Declarative intuitive syntax) The intuitive syntax is declarative.

Whichever of these two is what you were trying to say is the one that's correct.