Financial & quantitativeGenerated from the public API

CurveComparisonChart

Read a market, a risk or a return, with the axis and the tooltip wired for the job.

@luc/ui/charts

What it shows

Compare several curves over one ordered numeric x domain, such as implied volatility across strikes or expiries.

Live preview

Implied volatility in percent against strike: the smile shape is the market's, never interpolated here.

<CurveComparisonChart
  xLabels={[90, 95, 100, 105, 110]}
  curves={[
    {
      name: "One month",
      tone: "accent",
      emphasis: true,
      values: [24.1, 20.4, 18.6, 19.2, 21.8],
    },
    { name: "Three months", tone: "neutral", values: [22.4, 19.6, 18.1, 18.9, 20.7] },
  ]}
  xLabel="Strike"
  yLabel="Implied volatility"
  format={{ kind: "percent", decimals: 1 }}
  height={320}
  ariaLabel="Smile by expiry"
/>

Controls

Height

320px

A chart measures its container, so it always needs a definite height.

State

The surface the chart is in — loading, empty and error are drawn by the component.

Accessible name

A drawing is not readable by a screen reader, so it needs a name that states what it shows.

The same fixture as the live preview above; the controls change how it is drawn, not what it measures.

Code

import { CurveComparisonChart } from "@luc/ui/charts";

<CurveComparisonChart
  xLabels={[90, 95, 100, 105, 110]}
  curves={[
    {
      name: "One month",
      tone: "accent",
      emphasis: true,
      values: [24.1, 20.4, 18.6, 19.2, 21.8],
    },
    { name: "Three months", tone: "neutral", values: [22.4, 19.6, 18.1, 18.9, 20.7] },
  ]}
  xLabel="Strike"
  yLabel="Implied volatility"
  format={{ kind: "percent", decimals: 1 }}
  height={320}
  ariaLabel="Smile by expiry"
  state="ready"
/>

Not controllable here

series / rows — The numbers are the caller's; the fixture above is the example.

Copy for an AI agentA specification an agent can act on: the import, the setup, the chosen props, the data contract and the accessibility expectation.

Implement `CurveComparisonChart` from Luc UI. It is: Read a market, a risk or a return, with the axis and the tooltip wired for the job.

Import it with: import { CurveComparisonChart } from "@luc/ui/charts";
Requires: react ^19.0.0; react-dom ^19.0.0; react-hook-form ^7.0.0 (optional, for @luc/ui/forms/react-hook-form); tailwindcss ^4.0.0; node >= 22 (repository tools). Import the stylesheet once at the app root and wrap the tree in `LucProvider`. Both come from the package that publishes @luc.

Chosen configuration: `height={320}`, `state="ready"`, `ariaLabel="Smile by expiry"`.

Accessibility: keep the component's own semantics. Do not re-implement its ARIA wiring, do not add roles it does not declare, and make sure every interactive element is reachable and operable from the keyboard with a visible focus state.
Styling: use Luc UI design tokens and the component's own props. Do not restyle with raw colour literals and do not override the component's internal structure with page CSS.
Motion: respect `prefers-reduced-motion`. The component already does, so do not disable it.

Reproduce this state:
```tsx
<CurveComparisonChart
  xLabels={[90, 95, 100, 105, 110]}
  curves={[
    {
      name: "One month",
      tone: "accent",
      emphasis: true,
      values: [24.1, 20.4, 18.6, 19.2, 21.8],
    },
    { name: "Three months", tone: "neutral", values: [22.4, 19.6, 18.1, 18.9, 20.7] },
  ]}
  xLabel="Strike"
  yLabel="Implied volatility"
  format={{ kind: "percent", decimals: 1 }}
  height={320}
  ariaLabel="Smile by expiry"
  state="ready"
/>
```

Usage

The values are prepared by the caller: this component draws the points it is given and computes no statistic of its own, so units, scaling and any summary have to be settled before the data reaches it.

It is drawn by the ECharts engine.

Worked examples with real data are on the family overview: Financial & quantitative

import { CurveComparisonChart } from "@luc/ui/charts";

<CurveComparisonChart
  xLabels={[90, 95, 100, 105, 110]}
  curves={[
    {
      name: "One month",
      tone: "accent",
      emphasis: true,
      values: [24.1, 20.4, 18.6, 19.2, 21.8],
    },
    { name: "Three months", tone: "neutral", values: [22.4, 19.6, 18.1, 18.9, 20.7] },
  ]}
  xLabel="Strike"
  yLabel="Implied volatility"
  format={{ kind: "percent", decimals: 1 }}
  height={320}
  ariaLabel="Smile by expiry"
/>

Data contract

`xLabels` defines the shared ordered x values; each `curves[]` entry supplies a name and a `values` array of equal length. The chart draws the supplied points without interpolation.

Important configuration

Set `xLabel`, `yLabel` and `format`, and use `emphasis` for the curve the reader should inspect first.

Guidelines

When not to use

Do not read values between supplied strikes as if the line were an interpolated model; the connecting geometry is not new data.

Configuration

Exported symbols
Export	Kind	Signature
`CurveComparisonChart`	21 documented props	`({ xLabels, curves, xLabel, yLabel, format, xFormat, annotations, interaction, syncGroup, visibleSeries, scaleMode, allowedScaleModes, title, description, state, height, className, ariaLabel, ariaDes…`