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textual/docs/styles/color.md
Rodrigo Girão Serrão a3a452b674 Highlight rule usage in references.
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2023-01-09 16:14:11 +00:00

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Color

The color rule sets the text color of a widget.

Syntax

--8<-- "docs/snippets/syntax_block_start.md" color: (<color> | auto) [<percentage>]; --8<-- "docs/snippets/syntax_block_end.md"

The style color needs a <color> followed by an optional <percentage> to specify the color transparency.

Instead of a <color>, one can use the special value "auto" to choose automatically the color with the best contrast for readability purposes.

Examples

Basic usage

This example sets a different text color for each of three different widgets.

=== "Output"

```{.textual path="docs/examples/styles/color.py"}
```

=== "color.py"

```python
--8<-- "docs/examples/styles/color.py"
```

=== "color.css"

```sass hl_lines="8 12 16"
--8<-- "docs/examples/styles/color.css"
```

Auto

The next example shows how auto chooses between a lighter or a darker text color to increase the contrast and improve readability.

=== "Output"

```{.textual path="docs/examples/styles/color_auto.py"}
```

=== "color_auto.py"

```py
--8<-- "docs/examples/styles/color_auto.py"
```

=== "color_auto.css"

```sass hl_lines="2"
--8<-- "docs/examples/styles/color_auto.css"
```

CSS

/* Blue text */
color: blue;

/* 20% red text */
color: red 20%;

/* RGB color */
color: rgb(100, 120, 200);

/* Automatically choose color with suitable contrast for readability */
color: auto;

Python

You can use the same syntax as CSS, or explicitly set a Color object.

# Set blue text
widget.styles.color = "blue"

from textual.color import Color
# Set with a color object
widget.styles.color = Color.parse("pink")

See also

  • background to set the background color in a widget.