This tutorial introduces how to color the blue-gray effect. The author has adjusted the color tone very well, and handled the light and texture very well. It feels cool.
Original picture
final effect
1. Duplicate a layer and remove the color.
2. Perform hue saturation on the decolorized layer and reduce the brightness. Purpose suppresses darkness. This method will cause less loss in quality when darkening the image. The specific data is as shown in the figure:
3. Use the Dodge tool to brush out the highlights. The data is as shown in the figure: