Palette controls are essentially radio controls. The difference between palette controls and radio controls is purely presentational: Palette controls allow you to define an array of colors for each option which will be used to show users a palette.

Example

Kirki::add_field( 'theme_config_id', [
	'type'        => 'palette',
	'settings'    => 'palette_setting',
	'label'       => esc_html__( 'Palette Control', 'kirki' ),
	'section'     => 'section_id',
	'default'     => 'light',
	'priority'    => 10,
	'choices'     => [
		'light' => [
			'#ECEFF1',
			'#333333',
			'#4DD0E1',
		],
		'dark' => [
			'#37474F',
			'#FFFFFF',
			'#F9A825',
		],
	],
] );

Usage

<?php
$saved_palette = get_theme_mod( 'palette_setting', 'light' );
if ( 'light' == $saved_palette ) {
	$background   = '#ECEFF1';
	$text_color   = '#333333';
	$border_color = '#4DD0E1';
} else if ( 'dark' == $saved_palette ) {
	$background   = '#37474F';
	$text_color   = '#FFFFFF';
	$border_color = '#F9A825';
}
$styles = "background-color:{$background}; color:{$text_color}; border-color:{$border_color};";
?>
<div style="<?php echo esc_attr( $styles ); ?>">
	Some text here
</div>