astra_hex_to_rgba( string $color, boolean $opacity = false )

	function astra_hex_to_rgba( $color, $opacity = false ) {

		$default = 'rgb(0,0,0)';

		// Return default if no color provided.
		if ( empty( $color ) ) {
			return $default;
		}

		// Sanitize $color if "#" is provided.
		if ( '#' == $color[0] ) {
			$color = substr( $color, 1 );
		}

		// Check if color has 6 or 3 characters and get values.
		if ( 6 == strlen( $color ) ) {
			$hex = array( $color[0] . $color[1], $color[2] . $color[3], $color[4] . $color[5] );
		} elseif ( 3 == strlen( $color ) ) {
			$hex = array( $color[0] . $color[0], $color[1] . $color[1], $color[2] . $color[2] );
		} else {
			return $default;
		}

		// Convert HEX to RGB.
		$rgb = array_map( 'hexdec', $hex );

		// Check if opacity is set(RGBA or RGB).
		if ( $opacity ) {
			if ( 1 < abs( $opacity ) ) {
				$opacity = 1.0;
			}
			$output = 'rgba(' . implode( ',', $rgb ) . ',' . $opacity . ')';
		} else {
			$output = 'rgb(' . implode( ',', $rgb ) . ')';
		}

		// Return RGB(a) color string.
		return $output;
	}