I've got a outer glow effect around a logo sitting on a aqua gradient background . The outer glow is white and 70% transparent with a Hard Mix blending mode . The blending mode infuses it with a superb color .

I want to cut out the logo + the outer glow as a transparent .PNG . I've already separated the outer glow in a layer of it's own .

My question is how can i preserve the color given by the Hard Mix blending mode so I can later use it for the web ? I plan to recreate the gradient via CSS and use the combination in a responsive website . Since the gradient will oscillate due to different page heights it is important to preserve the logo plus effect as is .

Please advise .