Module CSS.Color

type name =
| 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
| Grey
| Green
| Greenyellow
| 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
| Red
| Rosybrown
| Royalblue
| Saddlebrown
| Salmon
| Sandybrown
| Seagreen
| Seashell
| Sienna
| Silver
| Skyblue
| Slateblue
| Slategray
| Slategrey
| Snow
| Springgreen
| Steelblue
| Tan
| Teal
| Thistle
| Tomato
| Turquoise
| Violet
| Wheat
| White
| Whitesmoke
| Yellow
| Yellowgreen

The colors by name.

val string_of_name : name -> string

Gives the string equivalent of the argument.

val rgb_of_name : name -> int * int * int

Converts a color name into three integers representing the Red, Green and Blue channels. Channel values are in between 0 and 255.

val hex_of_rgb : (int * int * int) -> string

Convert a tuple of three integers between 0 and 255 into a hex string

type t =
| Name of name

A color by name

| RGB of int * int * int

Red, Green and Blue values. Clipped to 0..255 by most (All?) browsers.

| RGB_percent of int * int * int

RBG channels are specified as a percentage of their maximal value.

| RGBA of int * int * int * float

Same as RGB with additional transparency argument. Opacity should be between 0. (completely transparent) and 1. (completely opaque).

| RGBA_percent of int * int * int * float

RGB channels specified as percentage of their maximal value. Alpha channel (opacity) is still a 0. to 1. float.

| HSL of int * int * int

Hue, Saturation and Lightness values. Hue is an angle in degree (in interval 0..360). Saturation is a percentage (0..100) with 0 being colorless. Lightness is also a percentage (0..100) with 0 being black.

| HSLA of int * int * int * float

Same as HSL with an opacity argument between 0. and 1..

The type of colors, either by name, by Red-Green-Blue constructor or by Hue-Saturation-Lightness constructors.

val rgb : ?⁠a:float -> int -> int -> int -> t

build a color from the values of red, green, and blue channels. optional a argument can be used to specify alpha channel (aka opacity).

val hsl : ?⁠a:float -> int -> int -> int -> t

build a color from the values of hue, saturation, and lightness channels. optional a argument can be used to specify alpha channel (aka opacity).

type js_t = private Js_of_ocaml.Js.js_string Js_of_ocaml.Js.t

A js_t is a valid string representation of a CSS color

val string_of_t : t -> string

Convert to a string representation (for debugging purpose mainly).

val js : t -> js_t

Projection from OCaml to Js. js c is equivalent to Js.string (string_of_t c) but with a js_t return type.

val ml : js_t -> t

Projection from Js to OCaml. The function is the dual of js.

val js_t_of_js_string : Js_of_ocaml.Js.js_string Js_of_ocaml.Js.t -> js_t

Checks the well-formedness of a string or fails with Invalid_argument