duotone

US /ˈduː.oʊ.toʊn/
UK /ˈduː.oʊ.toʊn/
1.

çift tonlu

a halftone (= a picture built up from a pattern of very small spots) made using black and another color or two shades of the same color, or the method of producing an image like this:

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You can print duotones on an inkjet or color laser printer with excellent results.
1.

çift tonlu

made using black and another color or two shades of the same color:

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The exhibit consists of over 200 beautiful duotone photographs of legendary Hollywood stars.