What adjustment layer is good to adjust the color of the image

The Black & White adjustment layer

Explanation:

The Black & White adjustment layer is the best way to convert an image to black and white. It has six sliders: one for each of Photoshop's primary colors. Each slider controls how that color is converted into grayscale. Drag the relevant slider to the right to darken those colors; drag it to the left to brighten them.

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