# Design inspector

> Fill, stroke and shadow rows that open a compact picker with vertical hue and opacity tracks.

A shadcn/ui block from the [@reui](https://reui.io) registry, listed on [shadcn.exchange](https://shadcn.exchange/r/reui/c-color-picker-12).

- Page, with a live preview: https://shadcn.exchange/r/reui/c-color-picker-12
- Screenshot: https://abzjhwgwpdpz7ua5.public.blob.vercel-storage.com/shots/reui/c-color-picker-12-light-de4c3765a8aa640c.png
- Registry item: https://reui.io/r/new-york-v4/c-color-picker-12.json
- Listed: 2026-10-13, source last changed 2026-10-13

## Install

```bash
npx shadcn@latest add https://reui.io/r/new-york-v4/c-color-picker-12.json
```

Run it in a project that has shadcn/ui set up. It adds the files below and installs what they depend on.

## Dependencies

- Registry items: `card`, `@reui/color-picker`

## Files

### `c-color-picker-12.tsx`

```tsx
"use client"

import {
  ColorPicker,
  ColorPickerArea,
  ColorPickerContent,
  ColorPickerFields,
  ColorPickerPanel,
  ColorPickerSlider,
  ColorPickerSwatch,
  ColorPickerTrigger,
  formatColor,
  useColorPicker,
} from "@/components/reui/color-picker"

import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"

const PROPERTIES = [
  { id: "inspector-fill", label: "Fill", value: "#6366f1" },
  { id: "inspector-stroke", label: "Stroke", value: "#0f172a" },
  { id: "inspector-shadow", label: "Shadow", value: "#0f172a40" },
]

/* Hex and opacity apart, the way design tools print a color. */
function InspectorValue() {
  const { color } = useColorPicker()
  if (!color) return null
  return (
    <>
      <ColorPickerSwatch />
      <span className="font-mono text-xs">
        {formatColor({ ...color, alpha: 1 }, "hex")
          .slice(1)
          .toUpperCase()}
      </span>
      <span className="text-muted-foreground ms-auto text-xs tabular-nums">
        {Math.round(color.alpha * 100)}%
      </span>
    </>
  )
}

export function Pattern() {
  return (
    <Card className="w-full max-w-xs">
      <CardHeader>
        <CardTitle>Rectangle</CardTitle>
        <CardDescription>Hero card, 320 by 180</CardDescription>
      </CardHeader>
      <CardContent>
        <div className="flex flex-col gap-2.5">
          {PROPERTIES.map(({ id, label, value }) => (
            <div
              key={id}
              className="grid grid-cols-[3.5rem_1fr] items-center gap-3"
            >
              <span id={id} className="text-muted-foreground text-sm">
                {label}
              </span>
              <ColorPicker defaultValue={value} alpha aria-labelledby={id}>
                <ColorPickerTrigger size="sm" className="w-full">
                  <InspectorValue />
                </ColorPickerTrigger>
                {/* Vertical hue and opacity tracks beside the area, the
                    compact layout of a design tool's inspector. */}
                <ColorPickerContent align="end">
                  <ColorPickerPanel>
                    <div className="flex gap-3">
                      <ColorPickerArea className="h-44 w-auto min-w-0 flex-1" />
                      <ColorPickerSlider
                        channel="hue"
                        orientation="vertical"
                        className="h-44"
                      />
                      <ColorPickerSlider
                        channel="alpha"
                        orientation="vertical"
                        className="h-44"
                      />
                    </div>
                    <ColorPickerFields />
                  </ColorPickerPanel>
                </ColorPickerContent>
              </ColorPicker>
            </div>
          ))}
        </div>
      </CardContent>
    </Card>
  )
}
```