Hue/Saturation and Levels Adjustment Layers

Here is my original color image

Here is the Desaturated (BW) Image

Here is the image adjusted for levels. 
Shadows 21, Midtones .91, highlights 231

Levesls adjusted toward the shadows
Shadows 156, Midtones .81, Highlights 171

Levels adjusted towards highlights
shadows 15, Midtones .16, Highlights 65