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copied!<p>There's no such thing as a "pure" RGB color that's consistent from one display to the next. Unless you're working in a standardized color space, the numbers that show up for a color on one display will probably render slightly differently on another.</p> <p>Have your designer convert your mock-ups to a standard color space such as sRGB. Then you can use the methods on NSColor that take not just component values but the color space the components are in; this will get you colors that should look similar on any display.</p> <p>In other words, a color swatch made from (R, G, B) = (1.0, 1.0, 1.0) in Photoshop using sRGB should look virtually identical to a color swatch drawn using a color you get this way:</p> <pre><code>NSColorSpace *sRGB = [NSColorSpace sRGBColorSpace]; CGFloat components[3] = { 1.0, 1.0, 1.0 }; NSColor *sRGBRed = [NSColor colorWithColorSpace:sRGB components:&components count:3]; </code></pre> <p>Note though that <code>+[NSColorSpace sRGBColorSpace]</code> is only available on Mac OS X 10.5 Leopard and above. If you still need to run on Tiger, you could write a little utility app that runs on 10.5 and converts the canonical sRGB colors to the calibrated RGB space:</p> <pre><code>NSColor *calibratedColor = [sRGBRed colorUsingColorSpaceName:NSCalibratedRGBColorSpace]; </code></pre> <p>Regardless of whether you use sRGB or the calibrated space, once you have a set of colors, you could put them in an NSColorList that you write to a file and then load from your application's resources at runtime.</p>

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