Struct Rgb 

pub struct Rgb {
    pub r: u8,
    pub g: u8,
    pub b: u8,
}

A 24-bit sRGB colour.

Fields

r: u8

Red channel.

g: u8

Green channel.

b: u8

Blue channel.

Implementations

impl Rgb

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

Creates a colour from its channels.

pub fn parse_hex(text: &str) -> Option<Self>

Parses #RRGGBB or #RGB, in either letter case.

pub fn mix(self, other: Self, t: f32) -> Self

Blends towards other: t = 0 gives self, t = 1 gives other. t is clamped to 0..=1.

pub fn relative_luminance(self) -> f64

WCAG relative luminance, from 0 (black) to 1 (white).

pub fn contrast_ratio(self, other: Self) -> f64

WCAG contrast ratio between two colours, from 1 to 21.

pub fn oklab(self) -> [f64; 3]

The colour in the OKLab perceptual space as [L, a, b].

pub fn perceptual_distance(self, other: Self) -> f64

Euclidean distance in OKLab. Around 0.02 is barely visible; 0.10 reads as a clearly different colour.

pub fn to_ansi256(self) -> u8

Nearest entry of the xterm 256-colour palette (indices 16..=255).

pub fn to_ansi16(self) -> u8

Nearest of the 16 standard terminal colours (xterm defaults).

Trait Implementations

impl Clone for Rgb

fn clone(&self) -> Rgb

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Rgb

impl Debug for Rgb

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

Formats the value using the given formatter.

impl Display for Rgb

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

Formats the value using the given formatter.

impl Eq for Rgb

impl From<Rgb> for CellColor

fn from(color: Rgb) -> Self

A hard-coded colour, written #RRGGBB.

impl Hash for Rgb

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 Rgb

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Rgb