Most Ottawa homes use 2700K-3000K (warm white) LEDs — these add a yellow cast that makes warm whites like Swiss Coffee look creamy and cool grays look slightly green.
If you use 4000K-5000K (daylight) bulbs in kitchens or bathrooms, the same warm white will look almost neutral, and a cool gray will look crisp and blue.
South-facing rooms in summer flood with warm afternoon light; north-facing rooms in winter get cool blue light. The same paint can shift dramatically across these conditions — this is why a 48-hour test on a movable board is essential.