I have the H jacket (with leather belt closure in black ) from the season before. I wear it with the same Chanel camellia denim jeans as
@haute okole. But my favorite outfits with this jacket are to go creative with a beige tiered pleated sacai skirt; a Dior tulle plumetis skirt; a commes de garçons gray patterned skirt;* or contemporary cargos. Or plain Celine or Chanel jeans.
If I wear it with Hermes, it becomes a bit serious for my personal style, but I have done it. (with Hermes black zip cargos from last year or an Hermes silk mosaic full length wrap skirt with appliqué beading). I wear a muscle tank or concert t shirt to bring it down a notch.
For an orange jacket, I would agree with the suggestion above of white pants; or a white, taupe, olive, charcoal gray or navy slip long dress, skirt, or trousers. Hermes cargos could be an adorable silhouette as could Hermes flat front shorts. Brunello trousers also look great with Hermes tops and jackets. (I think an orange slip is too runway, unless you have model proportions.
If you like to mix pattern, I think leopard might be great (as in ysl
Or Valentino or dolce top and white pants).
*my Hermes skirts tend to be slim, and with a long blazer like this, on me (I’m short, medium build) it looks oddly office circa 1980s. But, that’s a function of how these pieces fit my body and perhaps not hope they may appear on others.