What wattage or colour temperature is best for bathroom vanity lighting — warm or cool white?

For bathroom vanity lighting in GTA homes, the sweet spot is 3000K–3500K (warm white to neutral white), which provides accurate colour rendering for grooming tasks without the harsh clinical feel of cool white. This colour temperature range closely mimics natural daylight and flatters skin tones — important for a space where you apply makeup, shave, and assess your appearance daily.

Colour temperature is measured in Kelvin (K), and the number tells you where the light falls on the warm-to-cool spectrum. 2700K is a warm, yellowish tone — cozy and relaxing but too warm for accurate colour rendering at the vanity. 3000K is warm white — the most popular choice for GTA bathroom vanity lighting because it balances warmth with clarity. 3500K is neutral white — slightly cooler, excellent for task lighting, and the preferred choice for homeowners who want precise colour accuracy. 4000K and above enters cool white territory — too blue-toned for most residential bathrooms, though some homeowners prefer it for a clean, modern aesthetic.

CRI Matters More Than Most People Realize

Beyond colour temperature, pay attention to the CRI (Colour Rendering Index) of your vanity light bulbs or fixture. CRI measures how accurately the light source renders colours compared to natural sunlight (which has a CRI of 100). For bathroom vanity lighting, choose fixtures or bulbs with a CRI of 90 or higher. A high-CRI light at 3000K will render skin tones, makeup colours, and clothing colours accurately, while a low-CRI light at the same colour temperature will make everything look slightly washed out or off-colour. Most quality LED vanity fixtures from GTA lighting suppliers list the CRI on the packaging — look for "90 CRI" or "90+ CRI."

Brightness and Fixture Placement

For vanity lighting brightness, aim for 150–200 lumens per linear foot of vanity as a general guideline. A 48-inch double vanity needs approximately 600–800 total lumens from the vanity light fixtures. A 24-inch single vanity needs 300–400 lumens. These are rough guidelines — your perception of brightness also depends on wall colour, mirror size, and whether you have supplemental overhead lighting.

Fixture placement matters enormously for flattering, shadow-free illumination. The ideal setup is vanity sconces mounted on either side of the mirror at approximately eye level (roughly 60–66 inches from the floor to the centre of the fixture). This cross-lighting eliminates the harsh shadows under the eyes, nose, and chin that a single overhead fixture creates. If side-mounted sconces are not possible — common in smaller GTA condo bathrooms where the mirror extends close to the side walls — a horizontal light bar mounted above the mirror is the next best option. Mount it 75–80 inches from the floor, and choose a fixture with a diffused lens or shade rather than exposed bulbs to minimize glare.

Practical Recommendations for GTA Homeowners

For most Toronto bathroom renovations, here is the practical approach: select LED vanity fixtures in 3000K with 90+ CRI, sized to provide adequate lumens for your vanity width. Budget $100–$500 for the vanity light fixture depending on style and finish, plus $100–$200 for installation by a licensed electrician if wiring modifications are needed. If you are simply swapping an existing vanity light for a new one using the same junction box, this is one of the few electrical tasks a handy homeowner can do without an electrician — turn off the breaker, disconnect the old fixture, connect the new one to the same wiring, and restore power.