17 lines
378 B
Go
17 lines
378 B
Go
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package color
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import (
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"github.com/lucasb-eyer/go-colorful"
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"github.com/mazznoer/csscolorparser"
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)
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func Darken(colorString string) (string, error) {
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c, err := csscolorparser.Parse(colorString)
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if err != nil {
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return "", err
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}
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h, s, l := colorful.Color{R: c.R, G: c.G, B: c.B}.Hsl()
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// decrease luminance by 10%
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return colorful.Hsl(h, s, l-.1).Clamped().Hex(), nil
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}
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