color

The CSS color property sets the foreground color of an element’s text content, and its decorations. It doesn’t affect any other characteristic of the element; it should really be called text-color and would have been named so, save for historical reasons and its appearance in CSS Level 1.
 
Note that the color value must be a uniform color, which may include a transparency value from CSS3 onwards. It can’t be a <gradient> which is an <image> in CSS.

Values

color: red; // A CSS Level 1 color.
color: orange; // The only color added in CSS Level 2 (Revision 1).
color: antiquewhite; // A CSS Level 3 color, sometimes called a SVG or X11 color.
color: #0f0; // The color ‘lime’ defined using the 3-character dash notation.
color: #00ff00; // The color ‘lime’ defined using the 6-character dash notation.
color: rgba( 34, 12, 64, 0.3); // A color defined using the available functional notations.
color: currentColor; // The special keyword representing the color’s value of its direct ancestor.

color: inherit;

<!DOCTYPE html>
<html>
        <head>
        <style>
div {
	color: red
}
div {
	color: #f00
}
div {
	color: #ff0000
}
div {
	color: rgb(255, 0, 0)
}
div {
	color: rgb(100%, 0%, 0%)
}
div {
	color: hsl(0, 100%, 50%)
}
/* 50% translucent */
            div {
	color: rgba(255, 0, 0, 0.5)
}
div {
	color: hsla(0, 100%, 50%, 0.5)
}
</style>
        </head>
        <body>
        <div> Color Css Style </div>
</body>
</html>