The Hue-Saturation tool is used to adjust hue, saturation and lightness
levels on a range of color weights for the selected area or active layer.
5.2.1. Activating the Tool
You can get to the Hue-Saturation tool in two ways :
In the the image-menu through:
→ → , or
By clicking the tool icon:
in Toolbox, provided that you have installed color tools in Toolbox.
For this, go to
Figure 13.123. Hue-Saturation tool options
You can save the color settings of your image by clicking the
button opens a menu:
Figure 13.124. Preset Menu
which lets you Import Settings from File or
Export Settings to File,
and gives you access to the Manage Save Settings dialog:
Figure 13.125. Manage saved Settings Dialog
Select Primary Color to Adjust
You can choose, between six, the three primary colors (Red,
Green and Blue) and the three complementary colors (Cyan,
Magenta and Yellow), the color to be modified. They are
arranged according to the color circle. When hue increases, hue
goes counter-clockwise. When it decreases, it goes clockwise. If
you click on the Master button, all colors
will be concerned with changes. GIMP standard is to set Red as 0.
Note that this colors refer to color ranges and not to color
Hue changes are shown in color swatches and the result is visible
in the image if the “Preview” option is enabled.
This slider lets you set how much color ranges will overlap. This
effect is very subtle and works on very next colors only:
Example for the “Overlap” option
Adjust Selected Color
The slider and the input box allow you to select a hue in
the color circle (-180, 180).
The slider and the input box allow you to select a value
(luminosity): -100, 100.
Lightness changes here concern a color range, while they
concern a color tone with Curves and Levels tools, which
work on color channels. If you change the Yellow lightness
with Hue-Saturation, all yellow pixels will be changed,
while only dark, bright or medium pixels luminosity will
be changed with Curves or Levels tools.
The slider and the input box allow you to select a
saturation: -100, 100.
The Initialize Color
button deletes changes to hue, lightness and saturation of the
The Preview button makes all changes dynamically so that they can
be viewed straight away.