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Hex.AdjustLuminance

Adjusts the luminance of a hex color

EvaluationContext.Colour.Hex.AdjustLuminance( hexColor, luminanceChange )
Parameter Type Required Description
hexColor STRING The hex color to adjust (e.g., "#01B8AA")
luminanceChange DOUBLE The luminance adjustment (-1 to 1)

STRING Modified hex color

EvaluationContext.Colour.Hex.AdjustLuminance("#5E81AC", 0.4) // Returns "#E5EAF199"

function 'EvaluationContext.Colour.Hex.AdjustLuminance' =
        (
            hexColor: STRING,
            luminanceChange: DOUBLE
        ) =>

            VAR H = EvaluationContext.Colour.Hex.Hue( hexColor )
            VAR S = EvaluationContext.Colour.Hex.Saturation( hexColor )
            VAR L = EvaluationContext.Colour.Hex.Luminance( hexColor )
            VAR A = EvaluationContext.Colour.Hex.Alpha( hexColor )

            VAR NewL = MIN( MAX( L + luminanceChange, 0 ), 1 )

            RETURN
                EvaluationContext.Colour.HSL.ToHex( H, S, NewL, A )