Dark blue chinos bestow voluminous style ups to men. The style can be customised according to the level of formality
White with a blue striped dress shirt (or check shirt), black leather oxford shoes, and a blazer complete the look with dark blue chinos.
A white or grey oxford shirt with white or grey canvas low-top sneakers also looks good with dark blue chinos.
In spring or winter, a grey or tan crew-neck sweater, double-breasted blazer, or a solid jacket will complement brown loafers to your dark blue chinos.