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J.David.Maclean
Currently Being Moderated

Finding the right HEX colour for a Pantone

Jun 14, 2012 8:50 PM

Tags: #web #pms #pantone #color_conversion #color-management

I'm trying to match a HEX colour to Pantone 369C. I've set my colour model in Bridge to Europe Web/Interent 2. Every time I convert the colour from Pantone to RGB the colour is way too bright. I'm not really after the exact colour match, more what looks better on the screen.

 

If I start in Ai with a pantone swatch then convert to RGB everything looks good.

If I open the Ai document in Ps it looks good.

If I select the pantone swatch in Ps colour picker it looks wrong.

 

Converting the pantone to RGB gets: 116, 175, 38 > #74af26  however it looks wrong in Dw

I'm using the sRGB colour space [as defined by my Br settings] and I'm exporting for web without colour management. The colour conversion in both Ps and Ai work out to be roughly the same, only 1 or 2 shades different, not the radical change you get when selecting the swatch in Ps

 

So my question really is, failing just tweeking the colour breakdown myself, is there some way I can get the right HEX colour to match what I see in Ai? See the attached image for example.

 

Screen Shot 2012-06-15 at 11.02.14 AM.png

 

Thanks in advance.

 
Replies
  • Currently Being Moderated
    Jun 14, 2012 11:57 PM   in reply to J.David.Maclean

    David,

     

    please compare your values ?RGB = 116 / 175 / 38 for 369C:

    http://www.fho-emden.de/~hoffmann/swatch16032005.pdf

     

    Lab:    60.5 / -44.2 / 60.4

    sRGB: 80 / 164 / 0

    aRGB: 112 / 163 / 38   aRGB=AdobeRGB(1998)

     

    Photoshop CS2:

     

    Lab:    61 / -45 / 61

    sRGB: 79 / 166 / 0

    aRGB: 112 / 164 / 38

     

    Your RGB values are nearer to aRGB (but still different), and then

    it's highly doubtful why these should be expressed by Hex-numbers,

    because Hex is used only in HTML. It cannot be expected that

    browsers will interprete these numbers correctly.

     

    Considering the same appearance in different applications:

    This requires

    a) a calibrated monitor

    b) correct color space settings

    c) applications which use color management (like Adobe CS#)

     

    Finally one can observe that the sRGB values contain B=0.

    This indicates, that the Lab values cannot be converted to sRGB

    without clipping.

     

    Best regards --Gernot Hoffmann

     

    Message was edited by: Gernot Hoffmann

     
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