1.   It is must to import “NoticationCenter” so that we can use “notificationCenterVibrancyEffect”

import NotificationCenter

2. At the time of cell selection do following code in delegate method of UITableView “didHighlightRowAtIndexPath”

let selectedCell = tableView.cellForRowAtIndexPath(indexPath)! as! UITableViewCell
    var vibrancyEffect = UIVibrancyEffect()
    selectedCell.firstLable.textColor = UIColor.whiteColor()
    selectedCell.secondLable.textColor = UIColor.whiteColor()
    vibrancyEffect = UIVibrancyEffect.notificationCenterVibrancyEffect()
    let selectBackgroundView = UIVisualEffectView(effect: vibrancyEffect)
    selectBackgroundView.autoresizingMask = [.FlexibleWidth, .FlexibleHeight]
    selectBackgroundView.frame = selectedCell.contentView.bounds
    let view = UIView(frame: selectBackgroundView.bounds)
    view.backgroundColor = UIColor(white: 0.1, alpha: 0.5)
    view.autoresizingMask = [.FlexibleWidth, .FlexibleHeight]
    selectedCell.contentView.backgroundColor = UIColor(white: 0.1, alpha: 0.5)
    selectBackgroundView.contentView.addSubview(view)
    selectedCell.contentView.addSubview(selectBackgroundView)
    selectBackgroundView.tag = 100        // we are giving tag here , so that we can recognize particular cell while deselecting it.

3. While deselecting cell put following line of code in delegate method of UITableView “didUnhighlightRowAtIndexPath”

 let selectedCell = tableView.cellForRowAtIndexPath(indexPath)! as! UITableViewCell
    selectedCell.firstLable.textColor = UIColor.darkGrayColor()
    selectedCell.secondLable.textColor = UIColor.darkGrayColor()
    selectedCell.contentView.viewWithTag(100)?.removeFromSuperview()     //from the tag we had given before we can recognize the cell.
    selectedCell.contentView.backgroundColor = .clearColor()