Guide · Coloring basics

What Is Flatting in Comics?

Flatting is the coloring step where inked line art is separated into flat, solid regions of color — one color per shape, no shading yet. Those flats become the foundation every colorist builds on. Here's what flatting means, why it exists, and how it fits into the coloring pipeline.

Definition

Flatting, in one sentence.

Flatting is the process of filling every closed region of a drawing with its own flat, solid color — skin, hair, each garment, the background — so the whole page is broken into clean, separated color areas. There's no rendering or shading at this stage; flats are purely a base. The value is that each region is now a reliable selection you can color into without bleeding.

  • One flat color per region, fully opaque.
  • Every shape is fully separated from its neighbors.
  • Flats sit under the line art, never touching the inks.
A comic character separated into flat color regions
FlatsEvery region is a clean, separated area of solid color.
Why it exists

Why colorists flat before they render.

Rendering — light, shadow, depth — is far easier when every shape is already a selection. Load a flat region, and any shading you paint stays perfectly inside it. Without flats, you'd be masking each area by hand every time you pick up a new brush. Flatting front-loads that work once so the rest of coloring flows.

The core idea: flats trade a bit of setup for a lot of speed. Clean, separated regions turn the whole page into ready-made selections for shading, gradients, and texture.

It's also why flatting is often the first paid job new colorists take: it's a well-defined, high-impact step that makes a whole studio's coloring faster.

Flatting vs rendering

Where flatting sits in the pipeline.

  • Inking — clean line art on its own layer.
  • Flatting — separate the inks into flat color regions.
  • Rendering — add light, shadow, and depth on top of the flats.
  • Effects — glows, textures, and final grade to finish.
The catch

Flatting by hand is slow.

Done manually, flatting a detailed page can mean hundreds of selections and a lot of gap-chasing where color leaks through breaks in the linework. It's necessary work, but it's repetitive — which is exactly the kind of task a dedicated tool can take over.

FAQ

Flatting questions.

Flatting is the coloring step where inked line art is separated into flat, solid regions of color, with one color per shape. These flats are a base layer that colorists then shade and render, and each region doubles as a clean selection.
Flats turn every shape into a reusable selection, so shading, gradients and textures stay perfectly inside their region. Flatting up front makes the rest of coloring far faster and cleaner.
No. Flatting is only the first step. It lays down flat base colors with no shading. Rendering, the step after flatting, adds light, shadow and depth on top of the flats.
On bigger projects a flatter, a coloring assistant, prepares the flats and passes them to the colorist. On smaller projects the colorist or the artist flats the pages themselves.
Photoshop is the most common, with the Magic Wand, Lasso and flatting plug-ins. Clip Studio Paint and Krita have their own fill tools for flatting. Read the best flatting tools for comics to compare them.
Less flatting, more creating

Skip the Busywork,
Keep the Craft.

Flatte turns your inks into clean, separated flat colors inside Photoshop, then hands you focused Repair tools for the tricky bits. A fast workflow tool — not an AI generator — so every color is still yours.