Funky Shadow

Funky Shadow

funky-shadow renders dithered gradient shadows behind an element. It uses a hidden canvas, Bayer matrix thresholding, and Oklab color interpolation. Use it for expressive product cards, editorial feature panels, app icons, media tiles, and small hero accents where a normal CSS shadow feels too generic.

Source: https://iamnoman.com/funky-shadow

When to Use

• The design needs a visible textured shadow or retro pixel glow.
• A card, tile, product mockup, or icon should feel more tactile without adding a full shader stack.
• The user explicitly asks for Funky Shadow, dithered shadow, Bayer shadow, pixel shadow, or Oklab shadow gradient.

Avoid it for dense operational UI, tables, forms, destructive flows, or anything where the shadow would compete with task completion.

Install

Check the package manager first, then install normally:

bun add funky-shadow
pnpm add funky-shadow
npm install funky-shadow

React is an optional peer dependency. In React projects, prefer the component API. In non-React projects, use renderShadow.

React Pattern

import { FunkyShadow } from "funky-shadow";

export function FeatureCard() {
  return (
    
      
        Content
      
    
  );
}

Keep width, height, and radius synchronized with the child element. If the element is responsive, derive the values from a measured wrapper or choose a stable fixed-format treatment.

Canvas Pattern

import { renderShadow } from "funky-shadow";

const canvas = document.querySelector("canvas");

renderShadow(canvas, 280, 180, 12, {
  preset: "galaxy",
  pixelScale: 3,
  offsetY: 20,
  blur: 30,
  opacity: 0.7,
});

Tuning Rules

• Start with pixelScale={3}. Use 1 for smooth gradients and 4 or 5 for obvious pixel texture.
• Keep dither="4x4" for most UI; use 8x8 for larger surfaces and off for clean bands.
• Prefer shape="radial" for natural light and shape="line" when the shadow should sweep directionally.
• Keep opacity below 0.8 unless the shadow is the visual subject.
• Custom colors should come from the project palette. Do not introduce unrelated neon palettes into restrained systems.
• Respect prefers-reduced-motion if the shadow parameters are animated.

Verification

After adding Funky Shadow:

1. Run the project typecheck/build.
2. Inspect desktop and mobile viewports for clipping around the canvas shadow.
3. Confirm text and controls remain readable over or near the shadow.
4. If the component is responsive, resize slowly and check that the canvas stays aligned with the child.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: tommylower
• Source: tommylower/cortex
• License: MIT

Install and usage instructions live in the source repository linked above.