How to Use Procreate Like a Coloring Book: Step-by-Step Guide

Coloring books moved to tablets for good reasons: no bleed-through, unlimited do-overs, and a palette of millions of colors instead of a tin of 24 pencils. Procreate was not built as a coloring app, but a handful of its features combine into something better than most dedicated coloring apps, with full control over brushes, textures, and layers.

This guide is a numbered walkthrough from a blank canvas to a finished colored page, followed by techniques for shading, texture, and fixing the leaky fills that frustrate beginners. New Procreate users who want to understand the app more broadly before diving in can start with the overview of what Procreate is and what it does, and anyone who prefers a structured path through the fundamentals will find options in the roundup of the best Procreate books for beginners.

What You Need

• An iPad with Procreate installed and an Apple Pencil or another compatible stylus. Finger coloring works but is less precise.
• A line-art image: a scanned coloring page, a downloaded printable, your own inked drawing, or a photo converted to line art. PNG or JPEG both work; PNG with a transparent background saves a step.
• Roughly 10 minutes for the first page while you learn the taps.

A note on sources: coloring pages shared by artists for personal use are fine to color for yourself. Posting or selling the colored result depends on the artist’s license, so check before sharing.

Step 1: Create a Canvas at the Right Size

1. Tap the plus icon in the Gallery and choose a preset or tap the small plus to make a custom canvas.
2. For screen-only coloring, 2048 by 2048 pixels at 132 dpi is plenty and leaves you many layers. For pages you may print, use 8.5 by 11 inches at 300 dpi, which gives 2550 by 3300 pixels.
3. Note the maximum layer count shown when you set the size. Larger canvases allow fewer layers; a coloring page needs about 6 to 15.

Step 2: Import the Line Art

1. Tap the wrench (Actions), then Add, then Insert a Photo or Insert a File, and choose your line art.
2. The image lands on its own layer in Transform mode. Drag the blue corner handles to resize; keep Uniform selected so the proportions hold. Tap the arrow tool to confirm.
3. Rename the layer by tapping it, choosing Rename, and typing “Lines.” It saves confusion later.

Step 3: Make the White Background Disappear

Most downloaded coloring pages are black lines on a white background. You need the white to vanish so your colors on layers below show through.

1. Tap the small “N” on the right of the Lines layer to open blend modes.
2. Scroll to Multiply and select it. White becomes transparent and black stays black.
3. Alternatively, for a truly transparent line layer, use the Selection tool set to Automatic, tap a white area, slide right until the threshold selects all the white, then swipe down with three fingers and choose Cut. This removes the white outright. Multiply is faster and is all most coloring pages need.

Step 4: Turn On Reference

Reference is the setting that makes Procreate behave like a coloring book. Without it, a color dropped on a lower layer floods the whole layer because that layer has no lines on it.

1. Tap the Lines layer once to open its menu.
2. Tap Reference. A small label appears on the layer.
3. Now any ColorDrop or Automatic selection on any other layer will use the Lines layer’s shapes as boundaries.

Step 5: Add Color Layers Underneath

1. With the Lines layer selected, tap the plus in the Layers panel to add a new layer. It appears above Lines.
2. Drag the new layer below Lines so the lines stay on top of your color.
3. Rename it for the element it will hold, such as “Skin,” “Sky,” or “Flowers.” Using separate layers for color groups makes recoloring and shading much easier later.

Step 6: Fill With ColorDrop

1. Tap the color circle in the top right and pick a color from the Disc, Classic, Harmony, Value, or Palettes tab.
2. Touch and hold the color circle, then drag it onto the canvas and release inside the shape you want to fill. The area floods with color and stops at the lines because Reference is active.
3. If the fill leaks into a neighboring area, the line art has a gap. Undo with a two-finger tap and see the gap-fixing section below.
4. If the fill leaves a thin white halo along the lines, keep your finger down after dropping and slide right to raise the Threshold. The fill pushes closer to the line edge. Slide left to pull it back if it starts jumping the lines.
5. Repeat for every area that should be this color on this layer. To speed up, after one drop, tap Continue Filling in the banner that appears; each tap on a new area then fills it with the same color until you tap elsewhere.

Step 7: Fill With Selection When ColorDrop Struggles

For textured lines, pencil sketches, or scans with gray noise, ColorDrop can behave unpredictably. The Selection tool is the alternative.

1. Tap the S-shaped Selection icon, choose Automatic, and tap inside the area to fill. Slide right to raise the threshold until the selection reaches the lines.
2. Tap additional areas to add them to the selection.
3. Tap Color Fill at the bottom of the selection toolbar, or swipe down with three fingers and choose Fill.
4. Tap the Selection icon again to deselect.

Step 8: Shade and Highlight Without Going Outside the Lines

Flat fills look like a kids’ coloring book. Shading makes the page look like an illustration, and Procreate has two tools that keep shading inside each colored area.

Alpha Lock

1. Tap a color layer and choose Alpha Lock, or swipe right with two fingers on the layer.
2. Now any brush stroke only affects pixels that already have color. Paint a darker shade along one side of each shape and a lighter tint on the other with a soft airbrush or a textured brush. Nothing spills past the fill.
3. Toggle Alpha Lock off when you want to add new areas to that layer.

Clipping Mask

1. Add a new layer directly above a color layer and tap it, then choose Clipping Mask. A small arrow shows it is clipped to the layer below.
2. Paint shading on the clipped layer. It appears only where the layer below has color, and you can lower its opacity, change its blend mode to Multiply for shadows or Add for glows, or delete it without touching the flat color.

Clipping masks are the more flexible of the two because shading stays on its own layer. Alpha Lock is faster when layer count is tight.

Step 9: Add Texture and Finishing Touches

• Colored pencil look. On a clipped layer above each color, use a grainy brush such as a pencil or chalk from the Sketching set with 30 to 50 percent opacity, stroking in one direction.
• Marker look. Use a flat, hard-edged brush at full opacity with overlapping strokes on Multiply so overlaps darken as real markers do.
• Paper texture. Add a top layer filled with a paper texture image or a Procreate paper brush, set it to Multiply or Overlay at 20 to 40 percent opacity.
• Recolor the lines. Alpha Lock the Lines layer and fill it with a dark brown or navy instead of pure black for a softer finish, or paint individual line sections to match nearby colors.
• Background. Fill the Background Color layer at the bottom of the stack with a tone that complements the page.

Fixing Fills That Leak

A fill that floods into the next area means the lines have a gap, even a one-pixel one. Three fixes, from quickest to most thorough:

1. Close the gap on the Lines layer. Zoom in, select the Lines layer, pick a small hard brush in black, and draw across the break. Return to the color layer and drop again.
2. Draw a barrier on the color layer. With the color layer selected, paint a thin line across the gap in the fill color itself. ColorDrop treats existing color on the same layer as a boundary too.
3. Thicken all lines at once. Duplicate the Lines layer and merge the two copies, or apply a very small Gaussian Blur then raise contrast with Curves. Thicker lines close hairline gaps across the whole page. Keep an untouched copy of the original lines hidden in case you overdo it.

If fills leave jagged or pixelated edges, the line art was low resolution. Resizing a small JPEG up to a large canvas spreads its pixels. Find a higher-resolution source or soften the result with a slight blur on the color layers.

Making Your Own Coloring Pages

Procreate can also produce the line art.

• From a sketch. Draw with a monoline or studio pen brush on one layer. Keep every shape fully closed so later fills behave.
• From a photo. Import a photo, duplicate the layer, desaturate it under Adjustments, apply Gaussian Blur to the top copy, set its blend mode to Color Dodge, then flatten and raise contrast with Curves. This produces a sketch-like outline that can be cleaned up by hand.
• From a traced reference. Lower a photo’s opacity, add a layer above, trace the key edges with a clean pen brush, then delete the photo.

Export the finished lines as a PNG with a transparent background, and it is ready to be colored again and again.

Layer Plan for a Typical Page

Common Mistakes

Coloring on the Lines layer. Fills then replace the lines and cannot be separated later. Always drop color on a layer beneath.

Forgetting Reference. The whole layer floods with one color. Undo, enable Reference on Lines, and drop again.

Dropping color too close to a line. The drop point determines which region fills. Aim for the center of each shape.

Setting Threshold too high. The fill jumps over thin lines into neighboring shapes. Back the slider off until the halo is barely gone.

One layer for every color. Running out of layers on a high-resolution canvas is common. Group colors by object instead of by hue.

Shading without Alpha Lock or a clipping mask. Strokes bleed over every edge and the clean coloring-book look is lost.

FAQs

How do you fill in the lines in Procreate?

Set the line-art layer to Reference, add a layer below it, then drag the color swatch from the top-right corner into each shape. The fill stops at the lines. Adjust the threshold by sliding your finger after the drop if a white edge remains.

Why does ColorDrop fill the whole canvas?

Either Reference is not enabled on the line-art layer, or the area you dropped into is not fully enclosed. Turn on Reference first; if it still floods, find and close the gap in the lines.

Can you import coloring pages into Procreate?

Yes. Use Actions, Add, Insert a Photo or Insert a File. JPEG pages need the blend mode set to Multiply so the white background disappears; transparent PNGs are ready to color immediately.

How do you shade without going over the lines in Procreate?

Turn on Alpha Lock for the color layer, which restricts brush strokes to already-colored pixels, or add a Clipping Mask layer above it and shade there. Both keep shading inside the filled shape.

Is Procreate good for digital coloring books?

Yes. ColorDrop with Reference, Alpha Lock, clipping masks, and textured brushes give far more control than most dedicated coloring apps, and the one-time purchase means no subscription for ongoing use.

Do I need Apple Pencil to color in Procreate?

No. ColorDrop fills work with a finger, and shading can be done with a finger as well, though a stylus gives finer control and pressure-sensitive strokes.

Next Step

Once Multiply, Reference, ColorDrop, and Alpha Lock become habit, a coloring page in Procreate takes minutes to set up and as long as you like to finish, with no risk of ruining the original. The same four features are the foundation for flat-color illustration generally, so time spent coloring is time spent learning the app. One practical point for anyone who assumed otherwise: Procreate is a one-time purchase, as the explainer on whether Procreate has a subscription confirms, so there is no ongoing cost to keep coloring. To build on these basics with structured lessons on layers, brushes, and color, the comparison of beginner-friendly Procreate guidebooks covers the titles that teach the app from the ground up.