Organic Pattern Generator

Four wave modes: horizontal, vertical, diagonal and free-flowing. All of them stack overlapping filled shapes using sinusoidal curves with a secondary harmonic and a touch of noise to break up the mechanical feel. "Flowing free" randomises the frequency and amplitude per layer, which gives results that read more like hand-drawn watercolor fills than anything computed. Complexity controls how many layers are drawn on top of each other.

Blobs are drawn using a path that samples a layered sine noise function at points around a circle — the result is a shape that's recognisably circular but subtly irregular, like something cut from paper or pressed from clay. Terrain strata stack horizontal noise-driven fills that look like geological cross-sections or topographic map layers. Both modes scale in density with the Complexity slider.

The cell mode places a set of seed points on the canvas and colors each pixel by which point is nearest — a Voronoi diagram. It runs a per-pixel loop using ImageData for performance rather than relying on a Delaunay library. The result is a mosaic of irregular color regions that evokes stained glass, biological tissue, or cracked earth. Complexity controls the number of seed points (more points = finer cells).

Ink mode draws thick curved brush strokes using quadratic Bezier curves at partial opacity, then drops blob shapes at the stroke origins to simulate ink pooling. Strokes are at 50–100% opacity and blobs at 30–80%, which creates the layered translucency you'd see in actual ink work. It's deliberately imprecise — results vary a lot between seeds, which is the point.

Every result is tied to a seed number. The same seed plus the same style and complexity settings always produces the same image. This means you can explore freely — hit Random until something clicks, then note the seed and recreate it at any export size. There's no history or account, so the seed number is the only way to get back to a specific result.

Editorial illustration backgrounds. Book cover textures. Podcast and album artwork. Social media post backgrounds. Website hero section textures. Fabric and wallpaper surface pattern design. Packaging backgrounds. The non-repeating quality of organic patterns makes them particularly good for large-format prints and hero images where a tiling artifact would be obvious.

No — unlike the geometric generator, organic patterns are not designed to tile. The noise functions and random placement of shapes produce results that don't have matching edges. They're intended for use as standalone backgrounds, textures or illustrations rather than as repeating CSS fills.

It scales the amount of content drawn — more wave layers, more blobs, more Voronoi points, more ink strokes, depending on the mode. At complexity 1 the pattern is sparse and minimal. At 10 it's dense. There's no single "right" value — it depends on the style and what you're using the image for. For hero backgrounds, 3–5 tends to read well. For textures, 7–10.

The cell mode runs a per-pixel nearest-neighbor search — at 1200px that's over a million pixels, each checked against every seed point. More seed points (higher complexity) multiplies that cost. At export size 2400px with complexity 10 it can take a few seconds. The other modes are much faster because they draw paths rather than computing pixel values.

Yes, without restriction. The patterns are generated algorithmically from your color choices — they're not derived from any existing artwork. Use them for client work, commercial products, or anything else. The small colorsforge.app text in the corner is a light attribution baked into the canvas, not a license condition.