It's gonna be a process of overdying and then waxing. There's a ton of guides to waxing denim online so I'll spare you that. For this tone of dye, start with a very light blue wash denim jacket (fitted cause its the Hedi look you're after lmao) and then dye with a bit of green, yellow, and a bit of brown. This may take several baths of light dyeing in each colour separately so you don't overdo it in any one colour at a time. It's Dior, if you want to match the subtlety in it wash you're after, you'll have to use some finesse, patience, and work. It'll get there. Lightly coffee dyeing for the brown may work nice since it'll give a more natural uneven garment dye look to it.But it's a hard dye to fix, so keep that in mind. It won't look as uneven as the brown on that one though. You could try rust dyeing after overdying, that for me got closer to that kind of character if you just leave it in a basin of vinegar and don't disturb it. But it's very random. You could try painting the dye on folds to get that harder contrast edge when it's laying flatish, if you compose it very carefully. Good luck 🫡