CSS Colors - W3Schools

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CSS Colors ❮ Previous Next ❯

CSS supports 140+ color names, HEX values, RGB values, RGBA values, HSL values, HSLA values, and opacity.

RGBA Colors

RGBA color values are an extension of RGB colors with an alpha channel - which specifies the opacity for a color.

An RGBA color value is specified with:

rgba(red, green, blue, alpha)

The alpha parameter is a number between 0.0 (fully transparent) and 1.0 (fully opaque).

rgba(255, 0, 0, 0.2); rgba(255, 0, 0, 0.4); rgba(255, 0, 0, 0.6); rgba(255, 0, 0, 0.8);

The following example defines different RGBA colors:

Example

#p1 {background-color: rgba(255, 0, 0, 0.3);} /* red with opacity */#p2 {background-color: rgba(0, 255, 0, 0.3);} /* green with opacity */#p3 {background-color: rgba(0, 0, 255, 0.3);} /* blue with opacity */ Try it Yourself »

HSLA Colors

HSLA color values are an extension of HSL colors 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 (fully opaque):

hsla(0, 100%, 30%, 0.3); hsla(0, 100%, 50%, 0.3); hsla(0, 100%, 70%, 0.3); hsla(0, 100%, 90%, 0.3);

The following example defines different HSLA colors:

Example

#p1 {background-color: hsla(120, 100%, 50%, 0.3);} /* green with opacity */#p2 {background-color: hsla(120, 100%, 75%, 0.3);} /* light green with opacity */#p3 {background-color: hsla(120, 100%, 25%, 0.3);} /* dark green with opacity */#p4 {background-color: hsla(120, 60%, 70%, 0.3);} /* pastel green with opacity */ Try it Yourself »

CSS opacity Property

The opacity property sets the opacity for the whole element (both background color and text will be opaque/transparent).

The opacity property value must be a number between 0.0 (fully transparent) and 1.0 (fully opaque).

rgb(255, 0, 0);opacity:0.2; rgb(255, 0, 0);opacity:0.4; rgb(255, 0, 0);opacity:0.6; rgb(255, 0, 0);opacity:0.8;

Notice that the text inside the element will also be transparent/opaque!

The following example shows different elements with opacity:

Example

#p1 {background-color:rgb(255,0,0);opacity:0.6;} /* red with opacity */#p2 {background-color:rgb(0,255,0);opacity:0.6;} /* green with opacity */#p3 {background-color:rgb(0,0,255);opacity:0.6;} /* blue with opacity */ Try it Yourself » ❮ Previous Next ❯ ★ +1 Sign in to track progress

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