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Layouts in AutoCAD: the background colour, new sheets and printing to scale

Layouts in AutoCAD have two colour slots, which is why the background so often appears not to change. All four states measured on AutoCAD 2027.

  • TS. Đỗ Quốc Hoàng
  • 11 min read
The four states of a layout background measured on AutoCAD 2027, with each colour read from the pixels of the drawing area Photo: Diagram by the Institute of Information Technology in Civil Engineering

Of all the questions people ask about layouts in AutoCAD, the most searched one is not how to create a layout. It is how to change its background colour. The reason is specific: users follow the instructions, click Apply, and the screen looks exactly the same as before.

This article measures four states on AutoCAD 2027 at the Institute to show where it breaks, then moves on to creating layouts, setting viewport scale and printing. For the full course on drawing presentation see our AutoCAD for Construction course.

Why the layout background colour appears not to change

Paper space has two separate colour slots, and almost every guide mentions only one.

The Drawing Window Colors dialog Photo: The Drawing Window Colors dialog on AutoCAD 2027, with Context set to Sheet / layout and a separate Paper background entry sitting right under Uniform background
Colour slotWhat it paintsMeasured default
Uniform backgroundthe area outside the sheetwhite, 255,255,255
Paper backgroundthe sheet itselfgrey, 138,138,138

Layouts in AutoCAD draw the sheet on top, and once you zoom in to work it fills the drawing area completely. Changing Uniform background at that moment changes the very thing that is hidden, so nothing moves on screen. We measured four states by reading the pixel colour of the drawing area after each change.

Uniform backgroundDisplay paper backgroundActual colour on screen
white (default)ongrey 138
white (default)offwhite 255
blackongrey 138
blackoffblack 0

The second row is the control, and it matters as much as the other three. Leave the background white and merely hide the sheet, and the screen turns white. That proves the colour was written correctly all along; it was simply covered.

There are two fixes, and which one you want depends on the look you are after.

For a single dark colour across the whole screen, change Uniform background and then clear the Display paper background checkbox. The layout then looks just like model space, with no sheet at all.

To keep the sheet but recolour it, leave Display paper background alone and change Paper background instead of Uniform background.

The click path, using the exact item names of the 2027 release. Type OP and press Enter, open the Display tab, then click Colors.... Set Context to Sheet / layout, set Interface element to the slot you want and pick a Color. Finish with Apply & Close and OK.

One trap comes with it, and it is rarely mentioned. The crosshair in a layout is black by default, while the crosshair in model space is white; we read both values from the same user profile. Turn a layout background black without touching the crosshair and the crosshair vanishes. In the same dialog, set Interface element to Crosshairs and give it a light colour.

One more thing worth knowing first: this colour lives in the user profile on that machine, not in the drawing. Send the file to somebody else and they still see their own colours.

Where the layout checkboxes live

The same Display tab of OPTIONS holds a Layout elements group with six checkboxes that decide how a layout appears.

The Layout elements group Photo: The Layout elements group on the Display tab of Options, captured as the machine shipped: five boxes ticked and one clear
CheckboxMeasured defaultWhat it does
Display Layout and Model tabsonshows the row of Model / Layout tabs at the bottom
Display printable areaondraws the dashed line of the area the printer can reach
Display paper backgroundondraws the sheet
Display paper shadowondraws the drop shadow of the sheet
Show Page Setup Manager for new layoutsoffopens the page setup dialog on every new layout
Create viewport in new layoutsoncreates one viewport automatically

That last box explains something that often surprises people: a brand new layout already has a viewport in it, and that comes from this setting rather than from the template.

Where to start the layout command

Read straight out of the acad.cuix interface file of the 2027 release on the machine, not from memory.

RouteDetail
Full commandLAYOUT
Aliasnone
Ribbonno button
Classic menuInsert → Layout → New Layout, and Insert → Layout → Layout from Template
ToolbarLayouts → New Layout, Layouts → Layout from Template

In practice almost nobody types it; people right-click the row of tabs at the bottom instead. The typed version is still worth knowing, because it is the only way to rename or copy a layout without leaving the keyboard.

Three commands go with it, read from the same file:

CommandAliasWhat it does
MVIEWMVcreates a viewport in a layout; no button anywhere
PSPACEPSleaves the viewport and returns to paper space
MSPACEMSenters the viewport to adjust the view

The prompts, step by step

The middle column is copied verbatim from AutoCAD 2027.

StepWhat the program asksWhat you do
1Enter layout option [Copy/Delete/New/Template/Rename/SAveas/Set/?] <set>:Type the letter of the job you want
2with New: Enter new Layout name <Layout2>:Type a name, or press Enter to take the suggestion

The ? option lists the layouts in the drawing together with the block that holds each one:

Active Layouts:
Layout:  Layout1       Block name:  *PAPER_SPACE.

That line reveals something about how AutoCAD stores things: each layout is a block of its own inside the file, with a name starting in an asterisk. It is also why copying a layout brings every line drawn on the sheet with it, while the view inside the viewport does not follow, because that geometry lives in model space.

The remaining options do what their names say: Copy duplicates, Delete removes, Rename renames, Template pulls one from a .dwt file, SAveas saves the current layout as a template, and Set switches to another layout.

The viewport command asks a longer question:

Specify corner of viewport or [ON/OFF/Fit/Shadeplot/Lock/NEw/NAmed/Object/Polygonal/Restore/LAyeroverride/laYer/2/3/4] <Fit>:

Type it while the Model tab is current and AutoCAD refuses in one line: ** Command not allowed in Model Tab **.

Creating a layout, step by step

Step 1 — make the sheet. Right-click a layout tab at the bottom and choose New Layout, or type LAYOUT then N. Right-click again and choose Rename to name it after the sheet, for example KT-01.

Step 2 — declare the paper. Type PAGESETUP, pick the new layout and click Modify. Declare the plotter, the paper size and the plot style there. The paper name must be picked from the list exactly, for example ISO full bleed A3 (420.00 x 297.00 MM).

This step decides everything that follows. Until a plotter is declared the layout has no real sheet, and we measured one left in that state: its plot device property came back as None.

Step 3 — draw the title block. The title block and the border are drawn straight on the paper at 1:1. An A3 border is a 420 × 297 rectangle, with no multiplying or dividing. That is the most comfortable thing about layouts compared with drawing a border in model space.

Step 4 — create the viewport. Type MV and pick two corners. The model geometry appears inside it.

Setting the layout viewport scale, then locking a viewport

The layout viewport scale is not optional, because a new viewport carries whatever scale the program happened to fit.

Autodesk's page About Scaling Views in Layout Viewports defines it in one line: "The scale factor of a view in a layout viewport represents a ratio between the actual size of the model displayed in the viewport and the size of the layout". The next sentence gives the arithmetic: "The ratio is determined by dividing the paper space units by the model space units".

In numbers: a drawing built in millimetres printed at 1:50 needs a viewport scale of 1 divided by 50, that is 0.02. Select the viewport, open Properties, and set Standard scale or Custom scale.

Then lock it. This is where a great many drawing sets go wrong without anyone noticing. Until it is locked, one accidental scroll of the mouse wheel while the cursor sits inside the viewport changes the scale. The sheet then prints at the wrong scale while looking perfectly normal.

Two ways to lock, with the same result:

  • Select the viewport and set Display locked to Yes in Properties.
  • Or type MV, then L; AutoCAD asks Viewport View Locking [ON/OFF]:, so type ON and pick the viewport.

We built a test A3 sheet with a 264 × 214 viewport in paper units, set the scale to exactly 0.02 and locked it, then read it back by machine: scale 1:50.00, locked yes.

Printing from a layout with the page setup manager

Once PAGESETUP is filled in, printing is one step: type PLOT, or press Ctrl and P, and confirm. Every setting already sits in the page setup of that layout.

For a whole set there are two roads. The PUBLISH command gathers several layouts into one run and is the built-in way. If your drawing set is laid out in model space in the Vietnamese manner, one title block per sheet, see our article on batch plotting with lisp. It also carries the nineteen questions of the command-line plot, copied verbatim.

Rotating the view inside a viewport is a different job with an article of its own: rotating a drawing in a layout.

Three things people say that are not true

What people sayWhat the 2027 release actually does
Changing Uniform background changes the layout backgroundThe sheet covers it, so nothing appears to change; clear Display paper background, or change the Paper background slot instead
Change the layout background from Page Setup by picking a colour under Shade PlotWe ran the command-line plot and copied the prompt verbatim: Shade Plot only offers [As displayed/legacy Wireframe/legacy Hidden/Visual styles/Rendered], with no colour at all
The VIEW command creates viewports in a layoutVIEW, alias V, is the named views manager, on the ribbon at View → Named Views → View Manager. The viewport command is MVIEW, alias MV

The second one deserves a fair word. Shade Plot is real and it does sit in the page setup dialog. But it decides whether a 3D drawing prints as wireframe, with hidden lines removed, or rendered. It has nothing to do with the screen background.

Frequently asked questions

The edges changed colour but the middle is still white, why?

The edge is Uniform background and the middle is the sheet. To change the sheet as well, change the Paper background slot, or clear Display paper background so the sheet disappears altogether.

Why is the cursor gone after switching to a black background?

Because the crosshair in a layout is black by default, unlike the white one in model space. In the same Drawing Window Colors dialog, set Interface element to Crosshairs and give it a light colour.

Why does a new layout already contain a viewport?

Because Create viewport in new layouts is ticked in OPTIONS on the Display tab. Clear it and new layouts arrive as blank sheets.

Why does typing MV say the command is not allowed?

You are on the Model tab. The exact message is ** Command not allowed in Model Tab **. Click a layout tab and type it again.

Why does it print at the wrong scale when the scale was set?

Almost certainly the viewport was never locked and a mouse wheel changed it. Set Display locked to Yes, or use the Lock option of MV.

What is the difference between model space and a layout?

Layouts in AutoCAD are sheets; model space is where you build at full size. On a layout: the title block is drawn 1:1, and the model shows through a viewport at whatever scale you set. That is how one model prints as several sheets at several scales.

About the author

TS. Đỗ Quốc Hoàng — Vice Director of the Institute of Information Technology in Civil Engineering, Hanoi University of Civil Engineering, and a specialist in software development for construction