Struct RgbColor 

#[repr(C)]
pub struct RgbColor {
    pub r: u8,
    pub g: u8,
    pub b: u8,
}

RGB color value.

Fields

r: u8

Red color component (0-255)

g: u8

Green color component (0-255)

b: u8

Blue color component (0-255)

Implementations

impl RgbColor

pub fn parse_x11_color(name: &str) -> Result<Self>

Parse an X11 color name.

The color name is resolved from Ghostty’s embedded rgb.txt table. Leading and trailing spaces and tabs are trimmed, and matching is ASCII case-insensitive. Hex values are not accepted by this function.

pub fn parse(value: &str) -> Result<Self>

Parse a flexible Ghostty color value.

Accepts Ghostty’s terminal color syntax: X11 color names, hex colors in 3-, 6-, 9-, or 12-digit form (the leading # is optional for 3- and 6-digit values), and rgb:<red>/<green>/<blue> or rgbi:<red>/<green>/<blue> specifications. Leading and trailing spaces and tabs are trimmed.

pub fn luminance(self) -> f64

Calculate W3C relative luminance for an RGB color.

Returns a normalized value from 0.0 for black to 1.0 for white. See https://www.w3.org/TR/WCAG20/#relativeluminancedef.

pub fn perceived_luminance(self) -> f64

Calculate perceived luminance for an RGB color.

Returns a normalized value from 0.0 for black to 1.0 for white. Ghostty treats a background color as light when this exceeds 0.5. This is not the metric used internally by Palette::generate, which uses CIELAB lightness.

pub fn contrast(self, other: RgbColor) -> f64

Calculate the WCAG contrast ratio between two RGB colors.

The contrast ratio is symmetric and ranges from 1.0 for identical colors to 21.0 for black and white.

Trait Implementations

impl Clone for RgbColor

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RgbColor

impl Debug for RgbColor

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

Formats the value using the given formatter.

impl Default for RgbColor

fn default() -> Self

Returns the “default value” for a type.

impl Eq for RgbColor

impl From<ColorRgb> for RgbColor

fn from(value: ColorRgb) -> Self

Converts to this type from the input type.

impl From<RgbColor> for ColorRgb

fn from(value: RgbColor) -> Self

Converts to this type from the input type.

impl Hash for RgbColor

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 RgbColor

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RgbColor