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# Color

Color definitions are used as per the CSS3 [CSS Color Module Level 3](http://www.w3.org/TR/css3-color/#svg-color) specification.

A few colors have multiple names referring to the same colors, e.g. `grey` and `gray` or `aqua` and `cyan`.

In these cases the _last_ color when sorted alphabetically takes precedence. eg. `Color((0, 255, 255)).as_named() == 'cyan'` because "cyan" comes after "aqua".

## RGBA

Internal use only as a representation of a color.

## Color

**Bases:** `Representation`

Represents a color.

### Methods

#### original

```python
def original() -> ColorType
```

Original value passed to `Color`.

##### Returns

`ColorType`

#### as\_named

```python
def as_named(*, fallback: bool = False) -> str
```

Returns the name of the color if it can be found in `COLORS_BY_VALUE` dictionary, otherwise returns the hexadecimal representation of the color or raises `ValueError`.

##### Returns

[`str`](https://docs.python.org/3/builtins/stdtypes.html#str) -- The name of the color, or the hexadecimal representation of the color.

##### Parameters

**`fallback`** : [`bool`](https://docs.python.org/3/builtins/functions.html#bool) _Default:_ `False`

If True, falls back to returning the hexadecimal representation of the color instead of raising a ValueError when no named color is found.

##### Raises

- `ValueError` -- When no named color is found and fallback is `False`.

#### as\_hex

```python
def as_hex(format: Literal['short', 'long'] = 'short') -> str
```

Returns the hexadecimal representation of the color.

Hex string representing the color can be 3, 4, 6, or 8 characters depending on whether the string a "short" representation of the color is possible and whether there's an alpha channel.

##### Returns

[`str`](https://docs.python.org/3/builtins/stdtypes.html#str) -- The hexadecimal representation of the color.

#### as\_rgb

```python
def as_rgb() -> str
```

Color as an `rgb(<r>, <g>, <b>)` or `rgba(<r>, <g>, <b>, <a>)` string.

##### Returns

[`str`](https://docs.python.org/3/builtins/stdtypes.html#str)

#### as\_rgb\_tuple

```python
def as_rgb_tuple(*, alpha: bool | None = None) -> ColorTuple
```

Returns the color as an RGB or RGBA tuple.

##### Returns

`ColorTuple` -- A tuple that contains the values of the red, green, and blue channels in the range 0 to 255. If alpha is included, it is in the range 0 to 1.

##### Parameters

**`alpha`** : [`bool`](https://docs.python.org/3/builtins/functions.html#bool) | [`None`](https://docs.python.org/3/builtins/constants.html#None) _Default:_ `None`

Whether to include the alpha channel. There are three options for this input:

- `None` (default): Include alpha only if it's set. (e.g. not `None`)
- `True`: Always include alpha.
- `False`: Always omit alpha.

#### as\_hsl

```python
def as_hsl() -> str
```

Color as an `hsl(<h>, <s>, <l>)` or `hsl(<h>, <s>, <l>, <a>)` string.

##### Returns

[`str`](https://docs.python.org/3/builtins/stdtypes.html#str)

#### as\_hsl\_tuple

```python
def as_hsl_tuple(*, alpha: bool | None = None) -> HslColorTuple
```

Returns the color as an HSL or HSLA tuple.

##### Returns

`HslColorTuple` -- The color as a tuple of hue, saturation, lightness, and alpha (if included). All elements are in the range 0 to 1.

##### Parameters

**`alpha`** : [`bool`](https://docs.python.org/3/builtins/functions.html#bool) | [`None`](https://docs.python.org/3/builtins/constants.html#None) _Default:_ `None`

Whether to include the alpha channel.

- `None` (default): Include the alpha channel only if it's set (e.g. not `None`).
- `True`: Always include alpha.
- `False`: Always omit alpha.

## parse\_tuple

```python
def parse_tuple(value: tuple[Any, ...]) -> RGBA
```

Parse a tuple or list to get RGBA values.

### Returns

`RGBA` -- An `RGBA` tuple parsed from the input tuple.

### Parameters

**`value`** : [`tuple`](https://docs.python.org/3/builtins/stdtypes.html#tuple)\[[`Any`](https://docs.python.org/3/library/typing.html#typing.Any), ...]

A tuple or list.

### Raises

- `PydanticCustomError` -- If tuple is not valid.

## parse\_str

```python
def parse_str(value: str) -> RGBA
```

Parse a string representing a color to an RGBA tuple.

Possible formats for the input string include:

- named color, see `COLORS_BY_NAME`
- hex short eg. `<prefix>fff` (prefix can be `#`, `0x` or nothing)
- hex long eg. `<prefix>ffffff` (prefix can be `#`, `0x` or nothing)
- `rgb(<r>, <g>, <b>)`
- `rgba(<r>, <g>, <b>, <a>)`
- `transparent`

### Returns

`RGBA` -- An `RGBA` tuple parsed from the input string.

### Parameters

**`value`** : [`str`](https://docs.python.org/3/builtins/stdtypes.html#str)

A string representing a color.

### Raises

- `ValueError` -- If the input string cannot be parsed to an RGBA tuple.

## ints\_to\_rgba

```python
def ints_to_rgba(
    r: int | str,
    g: int | str,
    b: int | str,
    alpha: float | None = None,
) -> RGBA
```

Converts integer or string values for RGB color and an optional alpha value to an `RGBA` object.

### Returns

`RGBA` -- An instance of the `RGBA` class with the corresponding color and alpha values.

### Parameters

**`r`** : [`int`](https://docs.python.org/3/builtins/functions.html#int) | [`str`](https://docs.python.org/3/builtins/stdtypes.html#str)

An integer or string representing the red color value.

**`g`** : [`int`](https://docs.python.org/3/builtins/functions.html#int) | [`str`](https://docs.python.org/3/builtins/stdtypes.html#str)

An integer or string representing the green color value.

**`b`** : [`int`](https://docs.python.org/3/builtins/functions.html#int) | [`str`](https://docs.python.org/3/builtins/stdtypes.html#str)

An integer or string representing the blue color value.

**`alpha`** : [`float`](https://docs.python.org/3/builtins/functions.html#float) | [`None`](https://docs.python.org/3/builtins/constants.html#None) _Default:_ `None`

A float representing the alpha value. Defaults to None.

## parse\_color\_value

```python
def parse_color_value(value: int | str, max_val: int = 255) -> float
```

Parse the color value provided and return a number between 0 and 1.

### Returns

[`float`](https://docs.python.org/3/builtins/functions.html#float) -- A number between 0 and 1.

### Parameters

**`value`** : [`int`](https://docs.python.org/3/builtins/functions.html#int) | [`str`](https://docs.python.org/3/builtins/stdtypes.html#str)

An integer or string color value.

**`max_val`** : [`int`](https://docs.python.org/3/builtins/functions.html#int) _Default:_ `255`

Maximum range value. Defaults to 255.

### Raises

- `PydanticCustomError` -- If the value is not a valid color.

## parse\_float\_alpha

```python
def parse_float_alpha(value: None | str | float | int) -> float | None
```

Parse an alpha value checking it's a valid float in the range 0 to 1.

### Returns

[`float`](https://docs.python.org/3/builtins/functions.html#float) | [`None`](https://docs.python.org/3/builtins/constants.html#None) -- The parsed value as a float, or `None` if the value was None or equal 1.

### Parameters

**`value`** : [`None`](https://docs.python.org/3/builtins/constants.html#None) | [`str`](https://docs.python.org/3/builtins/stdtypes.html#str) | [`float`](https://docs.python.org/3/builtins/functions.html#float) | [`int`](https://docs.python.org/3/builtins/functions.html#int)

The input value to parse.

### Raises

- `PydanticCustomError` -- If the input value cannot be successfully parsed as a float in the expected range.

## parse\_hsl

```python
def parse_hsl(
    h: str,
    h_units: str,
    sat: str,
    light: str,
    alpha: float | None = None,
) -> RGBA
```

Parse raw hue, saturation, lightness, and alpha values and convert to RGBA.

### Returns

`RGBA` -- An instance of `RGBA`.

### Parameters

**`h`** : [`str`](https://docs.python.org/3/builtins/stdtypes.html#str)

The hue value.

**`h_units`** : [`str`](https://docs.python.org/3/builtins/stdtypes.html#str)

The unit for hue value.

**`sat`** : [`str`](https://docs.python.org/3/builtins/stdtypes.html#str)

The saturation value.

**`light`** : [`str`](https://docs.python.org/3/builtins/stdtypes.html#str)

The lightness value.

**`alpha`** : [`float`](https://docs.python.org/3/builtins/functions.html#float) | [`None`](https://docs.python.org/3/builtins/constants.html#None) _Default:_ `None`

Alpha value.

## float\_to\_255

```python
def float_to_255(c: float) -> int
```

Converts a float value between 0 and 1 (inclusive) to an integer between 0 and 255 (inclusive).

### Returns

[`int`](https://docs.python.org/3/builtins/functions.html#int) -- The integer equivalent of the given float value rounded to the nearest whole number.

### Parameters

**`c`** : [`float`](https://docs.python.org/3/builtins/functions.html#float)

The float value to be converted. Must be between 0 and 1 (inclusive).

## Related pages

- [API Documentation](./api-documentation-index.md)
- [Concepts](./concepts-index.md)
- [Dev Tools](./dev-tools-index.md)
- [Error Messages](./error-messages-index.md)
- [Examples](./examples-index.md)
- [Integrations](./integrations-index.md)
- [Internals](./internals-index.md)
- [Production Tools](./production-tools-index.md)
- [Pydantic](./pydantic-index.md)
- [Pydantic Core](./pydantic-core-index.md)

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