Imports System.Drawing

Public Class GraphicsEx

    Public Shared Function GetBrightness(c As Color) As Single
        Return (c.R * 0.299F + c.G * 0.587F + c.B * 0.114F) / 256.0F
    End Function

    Public Shared Function GetContrastedColor(pOtherColor As Color) As Color
        If GetBrightness(pOtherColor) < 0.55 Then
            Return Color.White
        Else
            Return Color.Black
        End If
    End Function
End Class