/**
 * The HSV colour model represents colours by describing the Hue, Saturation, and Value channels.
 */
export interface HSVColour {
    /** A number between 0 and 360 to describe the Hue channel */
    h: number;
    /** A number between 0 and 1 to describe the Saturation channel */
    s: number;
    /** A number between 0 and 1 to describe the Value channel */
    v: number;
}
/**
 * The RGB colour model represents a broad array of colours by describing the Red, Green and Blue channels.
 */
export interface RGBColour {
    /** A number between 0 and 255 to describe the Red colour channel */
    R: number;
    /** A number between 0 and 255 to describe the Green colour channel */
    G: number;
    /** A number between 0 and 255 to describe the Blue colour channel */
    B: number;
    /** A optional number between 0 and 1 to describe the Alpha colour channel */
    A?: number | undefined;
}
/**
 * L*a*b* space is three-dimensional and covers the entire range of human colour perception
 */
export interface LabColour {
    /** A number between 0 and 100 to describe the colour's lightness. (0 - black, 100 - white)  */
    L: number;
    /** A number between -128 and 127 to describe the green–red opponent colours, with negative values toward green and positive values toward red */
    a: number;
    /** A number between -128 and 127 to describe  blue–yellow opponents, with negative numbers toward blue and positive toward yellow */
    b: number;
}
/**
 * The CIE XYZ colour space is a device independent colour representation
 */
export interface XYZColour {
    /** X is a mix of response curves chosen to be nonnegative */
    X: number;
    /** Y as luminance */
    Y: number;
    /** Z is quasi-equal to blue */
    Z: number;
}
export interface HueHelper {
    /** Chroma for colour 1 */
    C1: number;
    /** Chroma for colour 2 */
    C2: number;
    /** Derivative of colour 1 Hue */
    h1_d: number;
    /** Derivative of colour 2 Hue */
    h2_d: number;
}
export type ColourSpace = "sRGB";
export type WCAG = "WCAG2.1" | "WCAG3.0";
/**
 * Named list from https://developer.mozilla.org/en-US/docs/Web/CSS/named-color
 */
export type NamedCSSColour = "aliceblue" | "antiquewhite" | "aqua" | "aquamarine" | "azure" | "beige" | "bisque" | "black" | "blanchedalmond" | "blue" | "blueviolet" | "brown" | "burlywood" | "cadetblue" | "chartreuse" | "chocolate" | "coral" | "cornflowerblue" | "cornsilk" | "crimson" | "cyan" | "darkblue" | "darkcyan" | "darkgoldenrod" | "darkgray" | "darkgreen" | "darkgrey" | "darkkhaki" | "darkmagenta" | "darkolivegreen" | "darkorange" | "darkorchid" | "darkred" | "darksalmon" | "darkseagreen" | "darkslateblue" | "darkslategray" | "darkslategrey" | "darkturquoise" | "darkviolet" | "deeppink" | "deepskyblue" | "dimgray" | "dimgrey" | "dodgerblue" | "firebrick" | "floralwhite" | "forestgreen" | "fuchsia" | "gainsboro" | "ghostwhite" | "gold" | "goldenrod" | "gray" | "green" | "greenyellow" | "grey" | "honeydew" | "hotpink" | "indianred" | "indigo" | "ivory" | "khaki" | "lavender" | "lavenderblush" | "lawngreen" | "lemonchiffon" | "lightblue" | "lightcoral" | "lightcyan" | "lightgoldenrodyellow" | "lightgray" | "lightgreen" | "lightgrey" | "lightpink" | "lightsalmon" | "lightseagreen" | "lightskyblue" | "lightslategray" | "lightslategrey" | "lightsteelblue" | "lightyellow" | "lime" | "limegreen" | "linen" | "magenta" | "maroon" | "mediumaquamarine" | "mediumblue" | "mediumorchid" | "mediumpurple" | "mediumseagreen" | "mediumslateblue" | "mediumspringgreen" | "mediumturquoise" | "mediumvioletred" | "midnightblue" | "mintcream" | "mistyrose" | "moccasin" | "navajowhite" | "navy" | "oldlace" | "olive" | "olivedrab" | "orange" | "orangered" | "orchid" | "palegoldenrod" | "palegreen" | "paleturquoise" | "palevioletred" | "papayawhip" | "peachpuff" | "peru" | "pink" | "plum" | "powderblue" | "purple" | "rebeccapurple" | "red" | "rosybrown" | "royalblue" | "saddlebrown" | "salmon" | "sandybrown" | "seagreen" | "seashell" | "sienna" | "silver" | "skyblue" | "slateblue" | "slategray" | "slategrey" | "snow" | "springgreen" | "steelblue" | "tan" | "teal" | "thistle" | "tomato" | "transparent" | "turquoise" | "violet" | "wheat" | "white" | "whitesmoke" | "yellow" | "yellowgreen";
export type NamedCSSColours = Array<[NamedCSSColour, string]>;