Is there a way to find a lighter and darker shade of a RGB color programmatically?

Ken Corey ken at
Wed Feb 15 05:25:16 CST 2012

On 15/02/2012 11:15, Keith (Gulf Breeze Ortho Lab) wrote:
> I have a problem... If a user selects a color and I put it into a variable (as RGB), how can I find a shade that is several shades lighter, and a shade that is several shades darker, also in RGB format?

Here are a few approaches:


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