Black, walnut, brass or brushed nickel. Depends on the style of the wardrobes and knobs :)

Why not handles?

Amerock Blackrock Standard Round Knob, Black Bronze · 詳細

Thumb Knob 3/4" - Flat Black · 詳細

Cosmas Contemporary Cabinet Hardware, Satin Nickel, Square Knob · 詳細

Kohler Purist Stillness Cabinet Knob, Vibrant Moderne Brushed Gold · 詳細

Of course this is down to your taste. If you want the knobs to stand out then look to brass (which would look good on the wood or polished nickel which is softer than chrome. If you want them to merge in then go for darker woods such as our ebony ones. For something amazing then look to glass. See our range here: https://www.priorsrec.co.uk/cupboard-knobs