I have a Polo linen jacket in a very similar cobalt blue colour and wear it with sky blue trousers. I'll post up a pic as I'll be wearing it soon. The snuff suede loafers was a good suggestion. I usually wear cobalt blue driving Mocs.
Thanks @Frank 🤓 They are nanoluxe cords from Peter Millar. Super-soft and quite breathable. Given my circumstance, I stock up on cotton, linen, hopsack and tropical wool pants. Thought it'll be nice to add some light weight cords😄. By the way, my high rise pants were actually inspired by you. Remember the thread some time back regardikf your epaulet high rise pants that got a poster here wildly uncontrolled because to him it was too much of a grandpa look? Well, that actually inspired me😎. Will post some high rise fit photo next week when time permits. Cheers😄