明度の反転 フィルターは活性レイヤー上もしくは選択範囲内において画素の明度を反転します。 色相や彩度は変更しませんが、 丸め誤差が原因で色が僅かに変わることもあります。 色相や彩度を反転させるなら「色」メニューの 階調の反転 コマンドをご利用ください。

Note that hue and saturation can be distorted quite a bit when applying twice this filter for colors with a high luminosity (for instance, HSV 102°,100%, 98%, a bright green, gives HSV 96°, 100%, 2% after a first application of the filter, and 96°, 100%, 98% after a second application). Thus, you should not expect to be able to apply this filter twice in a row and get back the image you started with.

This filter is found in the main menu under Colors → Value Invert.