HSLThe hsl() and hsla() CSS functions pick colors using hue, saturation, lightness, and alpha (transparency) channels.color-typesColor typeswidely2020-01-152022-07-15https://drafts.csswg.org/css-color-4/#the-hsl-notationcss3-colorshttps://developer.mozilla.org/docs/Web/CSS/Reference/Values/color_value/hslcss.types.color.hslcss.types.color.hsl.alpha_parametercss.types.color.hsl.mixed_type_parameterscss.types.color.hsl.space_separated_parametershttps://nowyoucanuse.com/features--hsl.html