You need two things: a general room light and a task light on the machine. The task light matters most — put it on the side opposite your dominant hand so your hand does not cast a shadow over the needle. Choose it on colour temperature near daylight and colour rendering above 90, not on wattage. If you can only improve one thing in a sewing room, this is usually it, and it is cheaper than any machine upgrade.
Questions people actually ask
Why can I not match navy thread at home?
Because warm domestic lighting around 2700 K makes navy read as black. You need something near daylight — 5000 to 6500 K — to see the colour the garment will be seen in.
What is CRI and why does it matter?
Colour rendering index measures how faithfully a light source shows colours. Above 90 is what you want. A very bright lamp with poor rendering is still useless for matching thread, and brightness is the only figure most boxes print.
Last reviewed 2026-08-11