# emptyColor

Heatmap: the colour of an empty cell (default transparent).

Canonical: https://chart.syidax.com/docs/options/emptyColor/

<a id="definition"></a>

## Definition

| Item | Value |
| --- | --- |
| JavaScript property | `emptyColor` |
| HTML attribute | `empty-color` |
| Type | `string` |
| Default | `undefined` |

undefined means this property was not explicitly set. The effective value may depend on the chart type and other settings.

<a id="related"></a>

## Related documentation

A property with the same name may have different types and defaults across charts. When using a direct tag, follow that chart's documentation below.

- [Shared facade and direct tags](https://chart.syidax.com/docs/concepts.md)
- [sy-heatmap](https://chart.syidax.com/docs/components/heatmap.md#property-emptyColor)
- [sy-calendar-heatmap](https://chart.syidax.com/docs/components/calendar-heatmap.md#property-emptyColor)
- [sy-density-map](https://chart.syidax.com/docs/components/density-map.md#property-emptyColor)
- [sy-spectrogram](https://chart.syidax.com/docs/components/spectrogram.md#property-emptyColor)