Why not marry a blue polo with beige chinos? As well as super functional, both of these items look awesome paired together. And if you need to easily play down your getup with shoes, complement your outfit with black leather flip flops.
Blue Polo with Beige Chinos Relaxed Hot Weather Outfits
For something on the off-duty side, consider wearing a blue polo and beige chinos. Introduce a playful feel to by finishing with a pair of grey leather sandals.