You have an RGB image that you want to convert to a duo…

Here is an answer to the question. You have an RGB image that you want to convert to a duotone, but in the image > Mode menu, the Duotone option in grayed out. Why is this happening?

• You must remove all existing color by Image > Adjustments > Desaturate first.
• Duotones require two channels, so you must delete one of RGB channels in the Channels panel first.
• Duotones require a single channel, so you must convert to grayscale first.
• You must add a spot color channel first.

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