Enum Color 

pub enum Color {
    Black,
    Red,
    Green,
    Yellow,
    Blue,
    Magenta,
    Cyan,
    White,
    BrightBlack,
    BrightRed,
    BrightGreen,
    BrightYellow,
    BrightBlue,
    BrightMagenta,
    BrightCyan,
    BrightWhite,
    Indexed(u8),
    Rgb(u8, u8, u8),
}

A terminal color in one of the supported palette spaces.

The sixteen named variants are the standard ANSI palette. Use Color::Rgb when exact 24-bit color should be preserved on true-color terminals and Color::Indexed when targeting a specific xterm 256-color palette entry. A Profile can downsample any variant to the capability of a particular output stream.

Variants

Black

Black (palette 0, foreground 30, background 40).

Red

Red (palette 1, foreground 31, background 41).

Green

Green (palette 2, foreground 32, background 42).

Yellow

Yellow (palette 3, foreground 33, background 43).

Blue

Blue (palette 4, foreground 34, background 44).

Magenta

Magenta (palette 5, foreground 35, background 45).

Cyan

Cyan (palette 6, foreground 36, background 46).

White

White (palette 7, foreground 37, background 47).

BrightBlack

Bright black (palette 8, foreground 90, background 100).

BrightRed

Bright red (palette 9, foreground 91, background 101).

BrightGreen

Bright green (palette 10, foreground 92, background 102).

BrightYellow

Bright yellow (palette 11, foreground 93, background 103).

BrightBlue

Bright blue (palette 12, foreground 94, background 104).

BrightMagenta

Bright magenta (palette 13, foreground 95, background 105).

BrightCyan

Bright cyan (palette 14, foreground 96, background 106).

BrightWhite

Bright white (palette 15, foreground 97, background 107).

Indexed(u8)

Extended xterm 256-color palette index (0..=255).

Rgb(u8, u8, u8)

24-bit true color as red, green, and blue bytes.

Implementations

impl Color

pub const fn rgb(r: u8, g: u8, b: u8) -> Self

Construct a 24-bit RGB color.

Returns Color::Rgb with the supplied red, green, and blue bytes. This is a const convenience constructor for code that prefers named parameters over the enum variant.

pub const fn named_index(self) -> Option<u8>

Return the 0..=15 ANSI palette index for a named color.

Returns Some(0..=15) for the sixteen named variants and None for Color::Indexed and Color::Rgb. The index is also the xterm 256-color palette index used when resolving a named color through Color::to_rgb.

pub const fn from_named(v: u8) -> Option<Self>

Convert a 0..=15 ANSI palette index into the matching named color.

Returns Some for values in 0..=15 and None for any higher value.

pub const fn is_named(self) -> bool

Return whether this is one of the sixteen named ANSI colors.

pub const fn is_named_bright(self) -> bool

Return whether this is a bright/high-intensity named color.

Bright colors are the named variants with palette indices 8..=15 and encode as foreground SGR 90..=97 or background SGR 100..=107. Color::Indexed and Color::Rgb are never bright.

pub fn to_rgb(self) -> (u8, u8, u8)

Convert this color to (red, green, blue) bytes.

Color::Rgb returns its stored components unchanged. Named colors and Color::Indexed are resolved through the xterm 256-color palette, where named colors use their 0..=15 palette index.

pub fn to_hex(self) -> String

Format this color as a lower-case #rrggbb hex string.

Palette and indexed colors are resolved with Color::to_rgb first, so the result is always the six-digit true-color form. The returned string never includes alpha.

pub fn to_hsl(self) -> (f32, f32, f32)

Convert this color to HSL components.

Returns (h, s, l) with hue in degrees (0.0..360.0) and saturation and lightness in 0.0..=1.0. Palette and indexed colors are resolved to RGB first. If the color is gray (r == g == b), saturation is 0.0 and hue is reported as 0.0.

pub fn hex(s: &str) -> Option<Color>

Parse a hex color string into Color::Rgb.

The leading # is optional. Accepted forms are:

• rgb / #rgb: shorthand, each nibble is doubled (f becomes ff).
• rrggbb / #rrggbb: one byte per channel.
• rrggbbaa / #rrggbbaa: a trailing alpha byte is parsed for validity but ignored.

Returns None for any other length or for non-hexadecimal input. The function does not panic.

pub fn hsl(h: f32, s: f32, l: f32) -> Color

Construct Color::Rgb from HSL.

h is hue in degrees and is wrapped into 0.0..360.0 with f32::rem_euclid. s (saturation) and l (lightness) are clamped to 0.0..=1.0. The intermediate RGB values are rounded to the nearest byte and clamped to 0..=255.

Trait Implementations

impl Clone for Color

fn clone(&self) -> Color

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Color

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for Color

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Color

fn eq(&self, other: &Color) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Color

impl Eq for Color

impl StructuralPartialEq for Color