Not Black & White but Blue & White!

Forum|Forum|8 years ago
December 20, 2017
5 replies
1568 views

Hello experts - I'm trying to create a blue & white image from a colour photo I took (of Manhattan skyline at night). What I'd like to do is turn it black and white, invert it (so that the lights of the buildings and windows become black dots) and then replace the black in the photo with a mid-blue.

I've tried 'replace colour', but when I change the black to blue it doesn't seem to work - the black just goes grey.

What am I doing wrong? Your help and expertise hugely appreciated on this...

This topic has been closed for replies.

Correct answer davescm

As an alternative to Derek's approach you could use a gradient map adjustment layer.

Dave

J

JM88Author

Participant

Many, many thanks all. For my particular image, davescm's gradient map technique worked particularly well.

Hugely appreciated - may you all find fifties on the pavement tomorrow.

davescm

Community Expert

Haha - you're welcome

Dave

S_Gans

Community Expert

JM88 - I love norman.sanders answer, but when I read your original question, it appears to me that you went to black and white using the Image>Mode>Grayscale menu option. That will result in you ONLY being able to get variations of gray, no matter what color you pick.

Derek Cross and davescm have some excellent options, using your start from RGB, but one other option might be to invert your original layer, and use a Black and White adjustment layer, with TINT turned on, then adjust your color to taste. I don't currently have the perfect image for this, but perhaps you can infer what I mean by this screenshot: