GX53 disc bulbs in cool daylight 6000 K
Buy a GX53 disc LED in cool daylight 6000 K; for the brightness of an old 40 W bulb pick 470 lm (≈5 W LED) — GX53 LEDs top out at about 750 lm, so for more light choose a fitting with more bulbs. 10 of our lights take it — lights, not bulbs, from £118.
Lights for this
takes GX53
Arrives 14–24 Oct
from £118
takes GX53
Arrives 14–24 Oct
from £125
takes GX53
Arrives 14–24 Oct
£127
takes GX53
Arrives 14–24 Oct
from £129
takes GX53
Arrives 14–24 Oct
£148
takes GX53
Arrives 14–24 Oct
£168
takes GX53
Arrives 14–24 Oct
£176
takes GX53
Arrives 14–24 Oct
£207
takes GX53
Arrives 14–24 Oct
from £222
takes GX53
Arrives 14–24 Oct
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The numbers for this situation
- Colour temperature6000 K
- Lights here that take this bulb10
- Lights that take it, from£118
- Like an old 40 W bulb470 lm
- Brightest GX53 LED bulbs≈400–750 lmtypical top of the range on sale
- LED watts for 470 lm5 W≈, at 100 lm/W
Worked out, not measured
Where these numbers come from
- Lumen equivalence from the ecodesign table; lights filtered by stated socket, suitable fitting and room. Checked against 10 matching lights in our catalogue snapshot of 2026-09-27; 10 can be bought now. Same sums on every page, release families-2026-09-29.
All the numbers
| Old bulb (W) | LED lumens | LED watts ≈ |
| 15 | 136 | 1 |
| 25 | 249 | 2 |
| 40 | 470 | 5 |