HTML HSL and HSLA Colors

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HTML HSL and HSLA Colors


HSL stands for hue, saturation, and lightness.
HSLA color values are an extension of HSL with an Alpha channel
(opacity).

HSL Color Values
In HTML, a color can be specified using hue, saturation, and lightness (HSL) in
the form:
hsl(hue, saturation, lightness)
Hue is a degree on the color wheel from 0 to 360. 0 is red, 120 is green, and 240 is blue.
Saturation is a percentage value. 0% means a shade of gray, and 100% is the full color.
Lightness is also a percentage value. 0% is black, and 100% is white.
Experiment by mixing the HSL values below:





 






HUE

0


SATURATION

100%


LIGHTNESS

50%




Example



hsl(0, 100%, 50%)


hsl(240, 100%, 50%)


hsl(147, 50%, 47%)


hsl(300, 76%, 72%)


hsl(39, 100%, 50%)


hsl(248, 53%, 58%)




Try it Yourself »


Saturation
Saturation can be described as the intensity of a color.
100% is pure color, no shades of gray.
50% is 50% gray, but you can still see the color.
0% is completely gray; you can no longer see the color.

Example



hsl(0, 100%, 50%)


hsl(0, 80%, 50%)


hsl(0, 60%, 50%)


hsl(0, 40%, 50%)


hsl(0, 20%, 50%)


hsl(0, 0%, 50%)




Try it Yourself »








Lightness
The lightness of a color can be described as how much light you want to give the color, where 0% means no light (black), 50% means 50% light (neither dark nor light),
and 100% means full lightness (white).

Example



hsl(0, 100%, 0%)


hsl(0, 100%, 25%)


hsl(0, 100%, 50%)


hsl(0, 100%, 75%)


hsl(0, 100%, 90%)


hsl(0, 100%, 100%)




Try it Yourself »


Shades of Gray
Shades of gray are often defined by setting the hue and saturation to 0, and
adjusting the lightness from 0% to 100% to get darker/lighter shades:

Example



hsl(0, 0%, 20%)


hsl(0, 0%, 30%)


hsl(0, 0%, 40%)


hsl(0, 0%, 60%)


hsl(0, 0%, 70%)


hsl(0, 0%, 90%)




Try it Yourself »


HSLA Color Values
HSLA color values are an extension of HSL color values, with an Alpha channel
- which specifies the opacity for a color.
An HSLA color value is
specified with:
hsla(hue, saturation, lightness,
alpha)
The alpha parameter is a number
between 0.0 (fully transparent) and 1.0 (not transparent at all):
Experiment by mixing the HSLA values below:





 






HUE

0


SATURATION

100%


LIGHTNESS

50%


ALPHA

0.5




Example



hsla(9, 100%, 64%, 0)


hsla(9, 100%, 64%, 0.2)


hsla(9, 100%, 64%, 0.4)


hsla(9, 100%, 64%, 0.6)


hsla(9, 100%, 64%, 0.8)


hsla(9, 100%, 64%, 1)




Try it Yourself »














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Reference: https://www.w3schools.com/html/html_colors_hsl.asp