rich-gradient 0.3.13

A gradient generator for the Rich library.

Purpose

rich-gradient layers smooth foreground and background gradients on top of Rich renderables. It includes a drop-in Text subclass, wrappers for Panel and Rule, gradient-aware Markdown, convenience wrappers for common Rich renderables, animated variants, and utilities for building palettes.

Highlights

• Works anywhere Rich expects a ConsoleRenderable, including panels, tables, and live updates.
• Generates color stops automatically or from CSS color names, hex codes, RGB tuples, or rich.color.Color objects.
• Supports foreground and background gradients, rainbow palettes, and seedable color spectrums.
• Ships with ready-to-use renderables:
  • Text
  • Gradient
  • Panel
  • Rule
  • Spectrum
  • Markdown
  • Table, Tree, Columns, Pretty, and Syntax
  • And their animated counterparts.
• AnimatedText, AnimatedGradient, AnimatedPanel, AnimatedRule, and AnimatedMarkdown for live gradient updates.
• Loads optional JSON configuration from ~/.rich-gradient/config.json, where you can toggle animation globally and customize the default spectrum palette.

What's new in v0.3.12

• Added an internal cached gradient ramp for Gradient rendering. Foreground and background styles are precomputed per render span and reused across segment lookups.

• Added benchmark coverage for static gradients, animated frame rendering, long text, and gradient panels.

• Added gradient convenience constructors for Rich Table, Tree, Columns, Pretty, and Syntax, each with a runnable module demo.

• Changed gradient segment rendering is shared across Gradient, Rule, and AnimatedRule for more consistent cell-aware output.

• Changed CLI functionality moved to rich-gradient-cli; this package is the core renderable library.

• Added RGB tuple color stops and stricter tuple channel validation.

• Fixed duration-limited AnimatedGradient instances now clean up their running state so they can be restarted.

• Fixed AnimatedPanel now accepts two-item regex highlight tuples like ("pattern", "style"), matching the base highlight parser.

• Fixed Rule and AnimatedRule empty-renderable fallbacks and thickness handling.

• Fixed AnimatedGradient refresh-rate validation and restart-after-stop behavior.

• See the CHANGELOG for more details.

Installation

rich-gradient targets Python 3.10+.

uv

# Recommended: use uv
uv add rich-gradient

# or via `uv pip`
uv pip install rich-gradient

Pip

Or with pip:

# via pip
pip install rich-gradient

📘 Read the Docs

Contributor notes

• Tests: pytest works without an editable install because tests/conftest.py adds src/ to sys.path. No extra env tweaks needed; just install deps and run pytest.

Usage

Basic Gradient Text Example

Use Text when you want a drop-in rich.text.Text replacement with gradient spans applied to the text itself.

from rich.console import Console
from rich_gradient import Text

console = Console()
console.print(Text("Hello, World!"))

---

Gradient Text with Specific Colors

If you want a bit more control of the gradient, you can specify the colors you want to use in the gradient by passing them as a list of colors to the colors parameter.

Color Formats

Color can be parsed from a variety of formats including:

Example Code

Specific Two-Color Gradient Example

console.print(
    Text(
        "This a gradient with two colors.",
        colors=["red", "orange"],
    ),
    justify="center"
)

---

Specific Four-Color Gradient Example

console.print(
    Text(
        "This a gradient uses four specific colors.",
        colors=["red", "#ff9900", "#ff0", "Lime"],
        justify="center",
    ),
)

Specific Color Gradient Result

---

Rainbow Gradient Example

If four colors aren't enough, you can use the 'rainbow' parameter to generate a rainbow gradient that spans the full spectrum palette.

console.print(
    Text(
        "This is a rainbow gradient.",
        rainbow=True,
        justify="center",
    ),
)

Use Spectrum(hues=..., seed=...) when you need reproducible color stops.

---

Still inherits from rich.text.Text

Since Text is a subclass of rich.text.Text, you can still use all the same methods and properties as you would with Text.

console.print(
    Text(
        "This is an underlined rainbow gradient.",
        rainbow=True,
        style="underline",
    ),
    justify="center"
)
console.line()
console.print(
    Text(
        "This is a bold italic gradient.",
        style="bold italic",
    ),
    justify="center"
)
console.line()

Wrap Any Rich Renderable

Use Gradient when you want to paint across an existing Rich renderable, such as Markdown, a table, a layout, or a standard Rich panel.

from rich.console import Console
from rich.markdown import Markdown
from rich_gradient import Gradient

console = Console()
console.print(
    Gradient(
        Markdown("## Renderables\n\n- Text\n- Panels\n- Markdown"),
        colors=["#38bdf8", "#a855f7", "#f97316"],
        bg_colors=["#0f172a", "#1f2937"],
        justify="center",
    )
)

Background Gradients

Pass bg_colors to Text, Gradient, Panel, Rule, or Markdown to apply background color stops. A single background color is treated as a solid fill; multiple stops interpolate across the rendered output.

from rich_gradient import Text

Text(
    "Foreground and background gradient",
    colors=["#f8fafc", "#a7f3d0"],
    bg_colors=["#0f172a", "#1e293b"],
)

Markdown

Use Markdown for a Rich Markdown renderable with the same gradient controls as Gradient.

from rich.console import Console
from rich_gradient import Markdown

console = Console()
console.print(
    Markdown(
        "# Gradient Markdown\n\nSupports **Rich Markdown** content.",
        colors=["cyan", "magenta", "gold1"],
    )
)

CLI

This package no longer ships a command-line interface. Install rich-gradient-cli for terminal commands that build on the renderables provided here.

Designed by Max Ludden