DecColor function
Decreases the component RGB values in a color by the specified amount (results in a darker color overall).
Declaration
function DecColor(AColor: TColor; AQuantity: Byte): TColorDescription
DecColor separates the color specified in AColor into its Red,
Green, and Blue component Byte values. It decreases each the RGB Byte values by
the amount specified in AQuantity with a lower limit of 0 for each of the
Byte values. The modified RGB Byte values are reassembled using RGBToColor to
form the return value for the routine.
For example:
DkSkyBlue := DecColor(clSkyBlue, 32); // darken by 12.5% DkKhaki := DecColor(TColor($8CE6F0), 40); // darken custom color
Use IncColor to increase (or lighten) the RGB component values in a color.
See also
An experiment, built from Lazarus main 2dfa93c66e of 10-22-2026. Not the official Lazarus documentation.