Struct Color 

#[repr(C)]
pub struct Color {
    pub r: f32,
    pub g: f32,
    pub b: f32,
    pub a: f32,
}

An RGBA color with f32 channels in linear space.

This is the core color type, designed for GPU upload (#[repr(C)]). Channels are in [0.0, 1.0] linear light (not sRGB gamma-encoded).

Fields

r: f32

Red channel (linear).

g: f32

Green channel (linear).

b: f32

Blue channel (linear).

a: f32

Alpha channel (1.0 = fully opaque).

Implementations

impl Color

pub const TRANSPARENT: Self

Fully transparent black.

pub const BLACK: Self

Black.

pub const WHITE: Self

White.

pub const GRAY: Self

50% gray (linear).

pub const RED: Self

Red.

pub const GREEN: Self

Green.

pub const BLUE: Self

Blue.

pub fn new(r: f32, g: f32, b: f32, a: f32) -> Self

Create from linear RGBA channels.

pub fn rgb(r: f32, g: f32, b: f32) -> Self

Create an opaque color from linear RGB.

pub fn from_srgb8(r: u8, g: u8, b: u8) -> Self

Create from sRGB 8-bit values (gamma-decoded to linear).

pub fn from_hex(hex: &str) -> Option<Self>

Create from an sRGB hex string (#RRGGBB or #RRGGBBAA).

pub fn with_alpha(self, a: f32) -> Self

Return this color with a new alpha value.

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

Linearly interpolate in linear RGB space.

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

Interpolate in OKLab perceptual space (better for gradients).

pub fn to_srgb8(self) -> [u8; 4]

Convert to sRGB 8-bit (gamma-encoded).

pub fn to_hex(self) -> String

Format as sRGB hex string (#RRGGBB).

pub fn to_svg_string(self) -> String

Format as an SVG color string.

pub fn to_oklab(self) -> OkLab

Convert to OKLab.

pub fn to_oklch(self) -> OkLch

Convert to OKLCH.

pub fn from_oklab(lab: OkLab) -> Self

Create from OKLab.

pub fn from_oklch(lch: OkLch) -> Self

Create from OKLCH.

pub fn to_array(self) -> [f32; 4]

Raw f32x4 array for GPU upload.

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 Default for Color

fn default() -> Self

Returns the “default value” for a type.

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 StructuralPartialEq for Color