EvaluationContext.Colour.Hex.AdjustAlpha

Adjusts the alpha component of a hex color

Syntax

EvaluationContext.Colour.Hex.AdjustAlpha(hexColor, alphaChange)

Parameters

Parameter	Type	Required	Description
hexColor	STRING	Yes	The hex color to adjust (e.g., “■ #01B8AA”)
alphaChange	DOUBLE	Yes	The alpha adjustment (-1 to 1)

Returns

(STRING) Modified hex colour

Example

EvaluationContext.Colour.Hex.AdjustAlpha("#5E81AC", -2.0) // Returns "#5E81AC66"

Definition

EvaluationContext.Colour.Hex.AdjustAlpha =
    (
        hexColor: STRING,
        alphaChange: DOUBLE
    ) =>
    
        VAR CleanHex = IF( LEFT( hexColor, 1) = "#", MID( hexColor, 2, 6), MID( hexColor, 1, 6 ) )
        VAR A = EvaluationContext.Colour.Hex.Alpha( hexColor )
    
        VAR NewA = EvaluationContext.Colour.Int.ToHex( MIN( MAX( A + alphaChange, 0 ), 1 ) * 255, 2 )
    
        VAR result = "#" & CleanHex & NewA
    
        RETURN result