Crate mcu_scheme 

MCU Scheme

Pre-built color scheme variants for Material Design 3.

Each scheme wraps DynamicScheme with a specific Variant:

• SchemeMonochrome: Grayscale palette for minimalist designs
• SchemeNeutral: Low chroma, subtle colors for professional designs
• SchemeTonalSpot: Balanced, versatile (default for Material Design 3)
• SchemeVibrant: High chroma, bold colors for energetic designs
• SchemeExpressive: Playful with hue shifts for artistic designs
• SchemeFidelity: True to source color for accurate color representation
• SchemeContent: Content-aware colors for image-derived themes
• SchemeRainbow: High chroma with tertiary shift for playful designs
• SchemeFruitSalad: Playful hue variations for fun designs

Example

use mcu_scheme::SchemeTonalSpot;
use mcu_hct::Hct;

// Create a tonal spot scheme from a blue source color
let source = Hct::from_int(0xFF0000FF);
let scheme = SchemeTonalSpot::new(source, false, 0.0);

// Access underlying DynamicScheme through Deref
assert!(!scheme.is_dark);
let _primary = &scheme.primary_palette;

Structs

DynamicScheme

A dynamic color scheme generated from a source color.

SchemeContent

A content-based color scheme that extracts dominant colors from images.

SchemeExpressive

An expressive color scheme with creative color manipulation.

SchemeFidelity

A fidelity color scheme that closely follows the source color’s hue and chroma.

SchemeFruitSalad

A fruit salad color scheme with playful hue variations.

SchemeMonochrome

A monochromatic color scheme using only lightness and saturation variations.

SchemeNeutral

A neutral color scheme with subtle color shifts.

SchemeRainbow

A rainbow color scheme creating a spectrum-inspired color palette.

SchemeTonalSpot

A tonal spot color scheme emphasizing the source color with tonal adjustments.

SchemeVibrant

A vibrant color scheme with saturated, bold colors.

Enums

Platform

Platform identifier for dynamic scheme. Only used in the 2025 spec.

SpecVersion

Specification version for dynamic scheme.

Variant

Enumeration of dynamic color scheme variants for Material Design 3.