ELI5: Explain Like I'm 5

Duotone

Duotone is a kind of picture that uses two colors instead of just one. Instead of a normal picture that typically uses many colors, in a duotone image, two colors are used to make a very stylized image. Usually the colors chosen for duotone images are very bold, but you can use any two colors you want. You might use duotone images for a website, a band logo, or just a special kind of artwork.
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