Colorous

This crate provides a collection of sequential, diverging and categorical color schemes ported from d3-scale-chromatic. Each color scheme may be sampled using either a rational index i/n or a continuous float 0 ≤ t ≤ 1.

• pub fn eval_rational(&self, i: usize, n: usize) -> Color
• pub fn eval_continuous(&self, t: f64) -> Color

Example

let gradient = colorous::VIRIDIS;
for i in 0..100 {
    println!("{:x}", gradient.eval_rational(i, 100));
}

Sequential (multi-hue)

# colorous::TURBO

The “turbo” color scheme by Anton Mikhailov.

# colorous::VIRIDIS

The “viridis” perceptually-uniform color scheme designed by van der Walt, Smith and Firing for matplotlib.

# colorous::INFERNO

The “inferno” perceptually-uniform color scheme designed by van der Walt and Smith for matplotlib.

# colorous::MAGMA

The “magma” perceptually-uniform color scheme designed by van der Walt and Smith for matplotlib.

# colorous::PLASMA

The “plasma” perceptually-uniform color scheme designed by van der Walt and Smith for matplotlib.

# colorous::CIVIDIS

The “cividis” color vision deficiency-optimized color scheme designed by Nuñez, Anderton, and Renslow.

# colorous::WARM

A 180° rotation of Niccoli’s perceptual rainbow.

# colorous::COOL

Niccoli’s perceptual rainbow.

# colorous::CUBEHELIX

Green’s default Cubehelix.

# colorous::BLUE_GREEN

# colorous::BLUE_PURPLE

# colorous::GREEN_BLUE

# colorous::ORANGE_RED

# colorous::PURPLE_BLUE_GREEN

# colorous::PURPLE_BLUE

# colorous::PURPLE_RED

# colorous::RED_PURPLE

# colorous::YELLOW_GREEN_BLUE

# colorous::YELLOW_GREEN

# colorous::YELLOW_ORANGE_BROWN

# colorous::YELLOW_ORANGE_RED

Sequential (single-hue)

# colorous::BLUES

# colorous::GREENS

# colorous::GREYS

# colorous::ORANGES

# colorous::PURPLES

# colorous::REDS

Diverging

# colorous::BROWN_GREEN

# colorous::PURPLE_GREEN

# colorous::PINK_GREEN

# colorous::PURPLE_ORANGE

# colorous::RED_BLUE

# colorous::RED_GREY

# colorous::RED_YELLOW_BLUE

# colorous::RED_YELLOW_GREEN

# colorous::SPECTRAL

Cyclical

# colorous::RAINBOW

The cyclical less-angry rainbow color scheme.

# colorous::SINEBOW

The “sinebow” color scheme by Jim Bumgardner and Charlie Loyd.

Categorical

Categorical color schemes are exposed simply as an array [Color; N].

# colorous::CATEGORY10

# colorous::ACCENT

# colorous::DARK2

# colorous::PAIRED

# colorous::PASTEL1

# colorous::PASTEL2

# colorous::SET1

# colorous::SET2

# colorous::SET3

# colorous::TABLEAU10

Ten categorical colors authored by Tableau as part of Tableau 10.

License

Licensed under the Apache License, Version 2.0.