Docs: https://treeform.github.io/chroma/

Common color parsers and formatters:

• hex - FFFFFF
• HtmlHexTiny - #FFF
• HtmlHex - #FFFFFF
• HtmlRgb - rgb(255, 255, 255)
• HtmlRgba - rgba(255, 255, 255, 1.0)
• HtmlName - white
• HexAlpha - FFFFFFFF
• parseHtmlColor - Any of the HTML formats.

Conversion from and to these colors spaces:

• 8-bit RGB
• 8-bit RGBA
• CMY colors are reverse of rgb
• CMYK colors are used in printing
• HSL attempts to resemble more perceptual color models
• HSV models the way paints of different colors mix together
• YUV origially a television color format, still used in digital movies

You can use these to change colors you already have

• lighten(color, amout) Lightens the color by amount 0-1
• darken(color, amout) Darkens the color by amount 0-1
• saturate(color, amout) Saturates (makes brighter) the color by amount 0-1
• desaturate(color, amout) Desaturate (makes grayer) the color by amount 0-1
• spin(color, degrees) Rotates the hue of the color by degrees (0-360)
• mix(colorA, colorB) Mixes two colors together using CMYK

import chroma

let
    a = color(0.7,0.8,0.9)
    b = color(0.2,0.3,0.4,0.5)

echo a.toHex()
echo parseHex("BADA55")
echo parseHtmlName("red")
echo hsv(b).color()
echo a.darken(0.2)
echo mix(a, b)