Changing Colors – Replace Color doesn’t do it

On May 9, 6:47 am, "Zimmy" wrote:

Newbie question for you.

I have a logo as a CMYK image, it has just the one color but with antialiasing. I want to change it all to another specific CMYK color. Replace Color only gives me a Hue slider etc, whereas I just want to type in the new color values.
The fill bucket messes up the antialiasing.

How do I do it?

Many thanks,
Z

Hi,
There will probably be someone that will explain exactly how to do this but for me it would help if you would link to an image so I can see what you’re up against.

Thanks,
Ron

On Fri, 9 May 2008 12:47:18 +0100, "Zimmy" wrote:

Newbie question for you.

I have a logo as a CMYK image, it has just the one color but with antialiasing. I want to change it all to another specific CMYK color. Replace Color only gives me a Hue slider etc, whereas I just want to type in the new color values.
The fill bucket messes up the antialiasing.

How do I do it?

Many thanks,
Z

I am not one of the color specialists, but while waiting for one of them to answer, make a copy with Ctrl/J and change the mode to RGB or Lab color. Change it to whatever color you want and then image/mode back to CMYK.

On Fri, 9 May 2008 12:47:18 +0100, Zimmy wrote:

….

I have a logo as a CMYK image, it has just the one color but with antialiasing. I want to change it all to another specific CMYK color. Replace Color only gives me a Hue slider etc, whereas I just want to type in the new color values.

….

How do I do it?

As Dave mentions, the color space can make a difference. Save the original somewhere safe, convert your image to RGB. Then add a solid color adjustment layer, type in the new CMYK values, and set the mode of the layer to color. Flatten the image, and convert back to CMYK.

—
Mike Russell – http://www.curvemeister.com

In article <g01dk6$4rl$1$>, "Zimmy"
wrote:

I have a logo as a CMYK image, it has just the one color but with antialiasing. I want to change it all to another specific CMYK color. Replace Color only gives me a Hue slider etc, whereas I just want to type in the new color values.

I would likely do this with either some mix of channels via the Channel Mixer, or with Image->Adjust->Curves, depending on the source and destination colors.

—
Photography, kink, polyamory, shareware, and more: all at http://www.xeromag.com/franklin.html

"Mike Russell" wrote in message

On Fri, 9 May 2008 12:47:18 +0100, Zimmy wrote:

…

I have a logo as a CMYK image, it has just the one color but with antialiasing. I want to change it all to another specific CMYK color. Replace Color only gives me a Hue slider etc, whereas I just want to type in the new color values.

…

How do I do it?

As Dave mentions, the color space can make a difference. Save the original
somewhere safe, convert your image to RGB. Then add a solid color adjustment layer, type in the new CMYK values, and set the mode of the layer to color. Flatten the image, and convert back to CMYK.

Not sure if this is what you meant but I was able to do it using LayerStyle/Color Overlay and then clicking on the Color chooser which lets me type the new color in. I didn’t have to convert it to RGB. The layer display now shows the Color Overlay effect, is this OK or could it cause me future problems?

Also if I flatten the image the background becomes solid white, whereas I think it was transparent before (the grey and white squares pattern)?

Z

On Mon, 12 May 2008 10:33:29 +0100, Zimmy wrote:

"Mike Russell" wrote in message

On Fri, 9 May 2008 12:47:18 +0100, Zimmy wrote:

…

I have a logo as a CMYK image, it has just the one color but with antialiasing. I want to change it all to another specific CMYK color. Replace Color only gives me a Hue slider etc, whereas I just want to type in the new color values.

…

How do I do it?

As Dave mentions, the color space can make a difference. Save the original
somewhere safe, convert your image to RGB. Then add a solid color adjustment layer, type in the new CMYK values, and set the mode of the layer to color. Flatten the image, and convert back to CMYK.

Not sure if this is what you meant but I was able to do it using LayerStyle/Color Overlay and then clicking on the Color chooser which lets me type the new color in. I didn’t have to convert it to RGB. The layer display now shows the Color Overlay effect, is this OK or could it cause me future problems?

Layer Style works very well indeed. It has the advantage of working with a transparent layer, and may be less dependent on the color space.

Also if I flatten the image the background becomes solid white, whereas I think it was transparent before (the grey and white squares pattern)?

Flatten makes everything opaque. Use Merge down, or merge visible to retain transparency.
—
Mike Russell – http://www.curvemeister.com

"Mike Russell" wrote in message

On Mon, 12 May 2008 10:33:29 +0100, Zimmy wrote:

"Mike Russell" wrote in message

On Fri, 9 May 2008 12:47:18 +0100, Zimmy wrote:

…

I have a logo as a CMYK image, it has just the one color but with antialiasing. I want to change it all to another specific CMYK color. Replace Color only gives me a Hue slider etc, whereas I just want to type in the new color values.

…

How do I do it?

As Dave mentions, the color space can make a difference. Save the original
somewhere safe, convert your image to RGB. Then add a solid color adjustment layer, type in the new CMYK values, and set the mode of the layer to color. Flatten the image, and convert back to CMYK.

Not sure if this is what you meant but I was able to do it using LayerStyle/Color Overlay and then clicking on the Color chooser which lets
me type the new color in. I didn’t have to convert it to RGB. The layer display now shows the Color Overlay effect, is this OK or could it cause me
future problems?

Layer Style works very well indeed. It has the advantage of working with a
transparent layer, and may be less dependent on the color space.

Also if I flatten the image the background becomes solid white, whereas I think it was transparent before (the grey and white squares pattern)?

Flatten makes everything opaque. Use Merge down, or merge visible to retain transparency.

Many thanks to Mike and all who answered. This is a great group!

Z