To make a flat colors 3D model look stylized, use bold color contrast, add outline effects, and incorporate simple geometric/texture details that exaggerate the model’s form.
This emphasizes non-photorealistic traits—like cartoonish edges or minimal shapes—for a distinct, artistic vibe instead of realistic depth. For example, pair complementary colors (blue/orange) or add thin outlines to make flat colors feel intentional.
If you’re new, start small: Stick to 3–5 bold hues or use Blender’s Freestyle for outlines. Small tweaks keep the model clean while boosting stylization.
By focusing on these intentional choices, you can turn flat-colored 3D models into stylized art without extra complexity.