If you're looking for LED (or any light actually) to have somewhat equivalent warm look of incandescent you want to buy lamps of 2700-3000K color temperature.
LEDs dropped into fluorescent fixtures need to have the ballast bypassed.
If you don't want to rewire, just want warmer color temp fluorescent lamps for your fixture google your lamp number with the suffix 830 instead of CW. 830-- the 800 refers to tri phosphor lamps and the 30 refers to 3000 K color temperature. The CW indicates "cool white" 4100K lamps with a less pleasing phosphor combination.
