Changing florescent to l e d that look like florescent

If you want the same output as your fluorescent tubes, you need to match both the color temperature and the lumens. Color temperature is how "cool" or "warm" the light looks. Lumens is a measure of brightness.

Find the wattage of your fluorescent bulbs, and google what the lumen output is. (Or it may be on the bulb) You want your LEDs to have the same total lumen output.

THIS CHART is a good guide to color temperature.