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hwb

Description

The hwb function for CSS specifies hue, whiteness, and blackness.

ChannelLow UnitHigh UnitLow NumberHigh Number
h0.0deg360.0deg0.0360.0
w0.0%100.0%0.0100.0
b0.0%100.0%0.0100.0
a0.0%100.0%0.01.0

Syntax

CSS

hwb()

Values

<hwb()> =
    hwb(
        [ <hue> | none ]
        [ <percentage> | <number> | none ]
        [ <percentage> | <number> | none ]
        [ / [ <alpha-value> | none ] ]?
    )
<hue> =
    <number> |
    <angle>
<number>

An integer or zero or more decimal digits followed by a dot (.) followed by one or more decimal digits. The first character may be preceded by a sign (- or +). The last character may be succeeded by an exponent (e or E) and an integer.

<angle>

A number with a unit: deg (360 degrees in a full circle), grad (400 gradians in a full circle), rad (2π radians in a full circle), or turn (1 turn in a full circle).

none

Specifies a missing component.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

<number>

An integer or zero or more decimal digits followed by a dot (.) followed by one or more decimal digits. The first character may be preceded by a sign (- or +). The last character may be succeeded by an exponent (e or E) and an integer.

<alpha-value> =
    <number> |
    <percentage>
<number>

An integer or zero or more decimal digits followed by a dot (.) followed by one or more decimal digits. The first character may be preceded by a sign (- or +). The last character may be succeeded by an exponent (e or E) and an integer.

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

Examples

1 · hwb · unit

2 · hwba · unit

3 · hwb · number

4 · hwba · number

5 · JS