How remove white or one color from image in Photoshop
Select–>Color Range, then select the white. Delete the white. Layer–>Matting–>Remove White Matte to clean up edges. That’s the down and dirty way.
For best results, bezier pen the logo out. Cut into the edges a little and you shouldn’t have white fringes around them.
*OR*
1. Use the Magic Wand tool to select all the white areas. (set the tolerance level higher or lower to get all of the white, but nothing of the parts you want to keep).
2. Use Select/Invert Selection.
3. CTRL+C to copy the selection.
4. Open a new image with a transparent background.
5. CTRL+V to paste the data into the new image.