Create a new layer with Shift + Control/Command + N, and fill it with
#000066 (RGB 0, 0, 102). Set the blending mode to “Exclusion.” Now copy
the background layer by clicking it and pressing Control/Command + J.
Set the blending mode for this copy to “Soft Light.”
To decrease the effect overall, activate the top-most layer and then click on
the background copy while holding the Shift key, thereby selecting both
layers. Alternatively, you can add them to a group with Control/Command
- G. Reduce the layer’s (or group’s) opacity. Note that in Photoshop
versions prior to CS5, you’ll have to reduce the opacity for each layer
individually.