The color CSS property sets the foreground color value of an element's text and text decorations, and sets the <currentcolor> value. currentcolor may be used as an indirect value on other properties and is the default for other color properties, such as border-color.
The color property is not limited to only text, but it applies to any element that has a foreground.
/* Keyword values */
color: currentcolor;
/* <named-color> values */
color: red;
color: orange;
color: tan;
color: rebeccapurple;
/* <hex-color> values */
color: #090;
color: #009900;
color: #090a;
color: #009900aa;
/* <rgb()> values */
color: rgb(34, 12, 64, 0.6);
color: rgba(34, 12, 64, 0.6);
color: rgb(34 12 64 / 0.6);
color: rgba(34 12 64 / 0.3);
color: rgb(34.0 12 64 / 60%);
color: rgba(34.6 12 64 / 30%);
/* <hsl()> values */
color: hsl(30, 100%, 50%, 0.6);
color: hsla(30, 100%, 50%, 0.6);
color: hsl(30 100% 50% / 0.6);
color: hsla(30 100% 50% / 0.6);
color: hsl(30.0 100% 50% / 60%);
color: hsla(30.2 100% 50% / 60%);
/* Global values */
color: inherit;
color: initial;
color: unset;