There's the HSL color format (Hue, Saturation, Luminence). Though to use it for your website would require a javascript/php function to convert it to RGB, unless they have a built in function for it that I don't know about.
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There's the HSL color format (Hue, Saturation, Luminence). Though to use it for your website would require a javascript/php function to convert it to RGB, unless they have a built in function for it that I don't know about.