When you are printing, you can also change the line thicknesses of different colors. This setting affects printouts but also the line thicknesses in color drawings on the screen, if you have selected Printer line widths in File menu > Settings.
Colors and gray shades
The table below shows the basic colors available in Tekla Structures drawings, and how the different colors are shown in black and white drawings and in grayscale drawings. The corresponding pen numbers referring to the line thicknesses used in the printed drawings are listed in the Pen column.
Some of the different gray shades are true colors in the way that they will keep their color regardless of the drawing color mode, all the way to printing.
You can select the color for a line in part properties and shape properties.
Tekla Structures color
Black and white
Colors in drawing hatches
You can select the color for a hatch in part and shape properties on the Fill tab after you have selected a fill type from the Type list.
The true gray shades are marked with red in the image below.
The gray scale colors (130 - 133) are also available for automatic hatches.