colornames

Gnuplot knows a limited number of color names. You can use these to define the color range spanned by a pm3d palette, to assign a named color to a particular linetype or linestyle, or to define a gradient for the current color palette. Use the command show colornames to list the known color names together with their RGB component definitions. Examples:

      set style line 1 linecolor "sea-green"
      set palette defined (0 "dark-red", 1 "white")
      print sprintf("0x%06x", rgbcolor("dark-green"))
            0x006400