Rust CSS Color Parser Library

Rust library to parse CSS color string as defined in the W3C's CSS Color Module Level 4.

Supported Color Format

• Named colors
• RGB hexadecimal (with and without # prefix)
  • Short format #rgb
  • Short format with alpha #rgba
  • Long format #rrggbb
  • Long format with alpha #rrggbbaa
• rgb() and rgba()
• hsl() and hsla()
• hwb()
• hwba(), hsv(), hsva() - not in CSS standard.

Not yet supported: lab(), lch().

Example Color Format

transparent
gold
rebeccapurple
lime
#0f0
#0f0f
#00ff00
#00ff00ff
rgb(0,255,0)
rgb(0% 100% 0%)
rgb(0 255 0 / 100%)
rgba(0,255,0,1)
hsl(120,100%,50%)
hsl(120deg 100% 50%)
hsl(-240 100% 50%)
hsl(-240deg 100% 50%)
hsl(0.3333turn 100% 50%)
hsl(133.333grad 100% 50%)
hsl(2.0944rad 100% 50%)
hsla(120,100%,50%,100%)
hwb(120 0% 0%)
hwb(480deg 0% 0% / 100%)
hsv(120,100%,100%)
hsv(120deg 100% 100% / 100%)

Usage

Add this to your Cargo.toml

csscolorparser = "0.5.0"

Examples

Using csscolorparser::parse() function.

let c = csscolorparser::parse("rgb(100%,0%,0%)")?;

assert_eq!(c.rgba(), (1., 0., 0., 1.));
assert_eq!(c.rgba_u8(), (255, 0, 0, 255));
assert_eq!(c.to_hex_string(), "#ff0000");
assert_eq!(c.to_rgb_string(), "rgb(255,0,0)");

Using parse() method on &str.

use csscolorparser::Color;

let c = "#ff00007f".parse::<Color>()?;

assert_eq!(c.rgba_u8(), (255, 0, 0, 127));
assert_eq!(c.to_hex_string(), "#ff00007f");

Default Feature

• named-colors: Enables parsing from named colors. Requires phf.

Optional Features

• rust-rgb: Enables converting from rgb crate types into Color.
• cint: Enables converting cint crate types to and from Color.
• serde: Enables serializing (into HEX string) and deserializing (from any supported string color format) using serde framework.

Similar Projects

• csscolorparser (Go)
• csscolorparser (Javascript)