sudo apt-get install python3-pip python3-gi python3-gi-cairo
sudo pip3 install delicolour

sudo apt-get install python3-pip gtk+3.0 python3-gi python3-gi-cairo
sudo pip3 install delicolour

sudo yum install python3-pip gtk3 python3-gobject
sudo pip3 install delicolour

sudo install python-pip gtk3 python-gobject
sudo pip install delicolour

The window title indicates the two current colours. The one being currently edited is between [ and ].

Favorite colours are little squares at the top of the window.

You can set a favorite colour from the current colour by right-clicking it or with the keyboard shortcuts Ctrl+1 to Ctrl+9.

You can set the current colour from a favorite colour by left-clicking it or with the keyboard shortcuts 1 to 9.

The -f/--fav-colours-count and -F/--fav-colours-rows-count command-line options control the number of available favorite colours.

delicolour does not remember favorite colours once you quit it.

The big rectangle below favorite colours shows the two current colours.

A little dot located at the top left or top right corner of the big rectangle indicates which of the two colours is the one currently being edited. You can switch to one or the other by clicking the left or right side of the big rectangle.

You can set the initial left and right colours when you launch delicolour with one of:

• The first positional argument, for example delicolour fd487e. This sets both the left and right colours at the same time.

• The -l/--left-colour and -r/--right-colour command-line options.

With fine-tuning controls, you can modify the current colour using buttons to finely increment/decrement parameters.

The control on the left side is the increment value. When you press one of the buttons on the right side, you add/subtract this value to/from the button’s parameter’s current value.

The parameters (buttons), from left to right, are:

• Decrease saturation (S in HSV)

• Increase saturation

• Decrease lightness (L in HSL)

• Increase lightness

The increment value also controls the incrementation/decrementation amount of the sliders when you scroll them with the mouse wheel.

The -i/--increment command-line option controls the initial fine-tuning increment value.

The RGB sliders control the amount of red, green, and blue in the current colour.

You can scroll the sliders and text boxes with the mouse wheel.

The HSV sliders control the hue, saturation, and value or the current colour.

You can scroll the sliders and text boxes with the mouse wheel. The hue slider wraps when you scroll its text box.

The CSS hex text box shows and controls the CSS hexadecimal value of the current colour.

You can copy the CSS hex value to the clipboard by clicking the text box and pressing Ctrl+C (no need to select the whole text). If the Copy # option is checked, delicolour preprends a # character to the copied value.

You can paste a CSS hex value, with or without a # prefix, by clicking the text box and pressing Ctrl+V (no need to select the whole text).

If the Lowercase option is checked, delicolour prints the CSS hex value in lowercase when updating.

The CSS RGB text box shows and controls the CSS RGB value of the current colour.

You can copy the CSS RGB value to the clipboard by clicking the text box and pressing Ctrl+C (no need to select the whole text).

You can paste a CSS RGB value, with or without a # prefix, by clicking the text box and pressing Ctrl+V (no need to select the whole text).

You can always use the following keyboard shortcuts:

You can use the following keyboard shortcuts when the focus is on one of the R, G, and B text boxes: