visualization.ColorSchemes

visualization.ColorSchemes()

Predefined color palettes for plotting.

Provides various color schemes suitable for different visualization types and accessibility requirements.

Attributes

Name	Type	Description
PLOTLY	List[str]	Default Plotly color sequence (10 colors)
D3	List[str]	D3.js Category10 colors (10 colors)
COLORBLIND_SAFE	List[str]	Wong palette - colorblind accessible (8 colors)
TABLEAU	List[str]	Tableau 10 color palette (10 colors)
SEQUENTIAL_BLUE	List[str]	Blue sequential scale for heatmaps (9 colors)
SEQUENTIAL_GREEN	List[str]	Green sequential scale (9 colors)
DIVERGING_RED_BLUE	List[str]	Red-blue diverging scale (9 colors)
DIVERGING_PURPLE_GREEN	List[str]	Purple-green diverging scale (9 colors)

Examples

>>> # Get Plotly colors
>>> colors = ColorSchemes.PLOTLY
>>> print(colors[0])  # '#636EFA'
>>>
>>> # Get colorblind-safe palette
>>> colors = ColorSchemes.get_colors('colorblind_safe', n_colors=3)

Methods

Name	Description
get_colors	Get color palette by name.
interpolate_colors	Generate color gradient between two colors.

get_colors

visualization.ColorSchemes.get_colors(scheme='plotly', n_colors=None)

Get color palette by name.

Parameters

Name	Type	Description	Default
scheme	str	Name of color scheme: - ‘plotly’: Default Plotly colors - ‘d3’: D3.js colors - ‘colorblind_safe’: Colorblind accessible - ‘tableau’: Tableau 10 palette - ‘sequential_blue’: Blue gradient - ‘sequential_green’: Green gradient - ‘diverging_red_blue’: Red-blue scale - ‘diverging_purple_green’: Purple-green scale	'plotly'
n_colors	Optional[int]	Number of colors needed If more than available, cycles through palette	None

Returns

Name	Type	Description
	List[str]	List of hex color codes

Examples

>>> colors = ColorSchemes.get_colors('plotly', n_colors=5)
>>> print(len(colors))  # 5
>>>
>>> # Cycles if more colors needed
>>> colors = ColorSchemes.get_colors('colorblind_safe', n_colors=10)
>>> print(len(colors))  # 10 (cycles through 8-color palette)

Raises

Name	Type	Description
	ValueError	If scheme name is not recognized

interpolate_colors

visualization.ColorSchemes.interpolate_colors(color1, color2, n_steps=10)

Generate color gradient between two colors.

Parameters

Name	Type	Description	Default
color1	str	Starting color (hex code)	required
color2	str	Ending color (hex code)	required
n_steps	int	Number of intermediate colors	10

Returns

Name	Type	Description
	List[str]	List of hex color codes

Examples

>>> # Gradient from red to blue
>>> gradient = ColorSchemes.interpolate_colors('#FF0000', '#0000FF', n_steps=5)
>>> print(gradient)
['#FF0000', '#BF003F', '#7F007F', '#3F00BF', '#0000FF']