Color Picker Field

Example:

<?php
class Color_Picker_Fields_Widget extends WP_Widget {
    function __construct() {
        // Instantiate the parent object
        $widget_ops = array(
            'classname' => 'widget_color_picker_fields_entries',
            'description' => esc_attr__('Color Picker Field Widget - Created by deshisoft', 'eye-theme')
       );
        $control_ops = array(
             'width' => 275
        );
        parent::__construct( false, 'Color Picker Field Widget', $widget_ops, $control_ops );
    }
    function widget( $args, $instance ) {
        extract( $args );
        // Widget output
        $title = apply_filters('widget_title', $instance['title']);
        $color_picker = apply_filters('widget_color_picker', $instance['color_picker']);
        echo $before_widget;
        echo '<div style="border:1px solid #ddd; background:#f6f6f6;padding:15px;">';
            echo esc_attr($title);
            echo esc_attr($color_picker);
        echo '</div>';
        echo $after_widget;
    }
    function update( $new_instance, $old_instance ) {
        // Save widget options
        $instance = array();
        $instance = $old_instance;
        $instance['title'] = strip_tags( $new_instance['title'] );
        $instance['color_picker'] = strip_tags( $new_instance['color_picker'] );
        return $instance;
    }
    function form( $instance ) {
        // Output admin widget options form
        $title = $instance['title'];
        $color_picker = $instance['color_picker']; ?>
        <p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:');          ?></label>
        <input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo  $this->get_field_name('title'); ?>" type="text" value="<?php echo $title; ?>" /></p>
        <p><label for="<?php echo $this->get_field_id( 'color_picker' ); ?>"></label><span><?php _e( 'BG color'); ?></span>
        <input class="color-field" type="text" id="<?php echo $this->get_field_id( 'color_picker' ); ?>" name="<?php echo $this->get_field_name( 'color_picker' ); ?>" value="<?php echo esc_attr( $color_picker  ); ?>" /></p>
       <script>
          // color picker
           (function($){
                var parent = $('body');
                if ($('body').hasClass('widgets-php')){
                parent = $('.widget-liquid-right');
            }
            jQuery(document).ready(function($) {
                parent.find('.color-field').wpColorPicker();
            });
            jQuery(document).on('widget-added', function(e, widget){
                 widget.find('.color-field').wpColorPicker();
            });
       })(jQuery);
      </script>
   <?php
   }
}
function color_picker_field_register_widgets() {
register_widget( 'Color_Picker_Fields_Widget' );
}
add_action( 'widgets_init', 'color_picker_field_register_widgets' );
?>

Theme Folder -> function.php
Add this line:

require get_template_directory() . '/inc/color_picker_widget.php';   // inc folder name depend on your theme.

Download Color Picker Widget Field