How to Choose a Lampshade: Size, Shape, Material and Color
The short answer: a lampshade should be about two-thirds the height of the lamp base, roughly as wide as the base is tall, and wide enough at the bottom to fully hide the bulb and socket from view. Choose a light-colored fabric or opal glass shade for soft ambient light, and a darker or lined shade when you want directional light for reading.
The shade does more work than the base. It controls how much light escapes, which direction it travels, and what color that light appears to be. A well-proportioned shade can rescue an ordinary lamp, and the wrong one will ruin a beautiful base.
Lampshade sizing: the formulas
Width
The shade's bottom diameter should be roughly equal to the height of the lamp base, measured from the bottom to the socket. It also needs to be wider than the widest part of the base — a shade narrower than the body of the lamp looks pinched.
The other essential check: the shade must be wide enough that you cannot see the bulb or socket when standing or sitting nearby. Visible hardware is the most common shade mistake and there is no fixing it with styling.
Height
The shade should be about two-thirds the height of the base, or roughly one-third of the lamp's total height. Too tall and the lamp looks hooded; too short and it looks like it is wearing a cap.
Quick reference
| Lamp base height | Shade bottom width | Shade height |
|---|---|---|
| 10 in | 9–11 in | 6–8 in |
| 14 in | 13–15 in | 8–10 in |
| 18 in | 16–19 in | 10–12 in |
| 22 in | 19–23 in | 12–14 in |
| 26 in | 22–27 in | 14–16 in |
If you are choosing a shade and base together, work out your target total lamp height first using our table lamp sizing guide, then divide.
Lampshade shapes and what they do
Drum. Straight sides, same width top and bottom. Casts light evenly up and down, making it the most versatile choice and the best default for a modern room. Works with almost any base.
Empire. Narrow at the top, wide at the bottom — the traditional tapered shade. Directs more light downward, which makes it good for reading. Suits classic and turned bases.
Coolie. An extreme taper, very wide at the bottom and narrow at the top. Throws light strongly downward and almost none up. Best for lighting a specific surface.
Bell. Curved, flared at the bottom. Softer and more decorative than an empire, at home in traditional and cottage interiors.
Square and rectangular. Sharp geometry that suits angular bases and contemporary rooms. Needs more careful alignment — a square shade sitting slightly crooked is very obvious.
Dome and mushroom. A fully enclosed curved top that diffuses light down and outward in a soft, even wash. This is why mushroom-shaped lamps are so comfortable to sit beside: the shade shape itself eliminates glare, with no bulb ever visible from a normal angle.
Materials: how each one changes the light
Linen and cotton. The standard for good reason. Diffuses light warmly and evenly, hides the bulb well, and reads as quietly expensive. Natural linen adds a faint golden cast that flatters most rooms.
Silk and faux silk. A slight sheen and a warmer, more luminous glow. More formal. Shows dust and sun damage sooner than linen.
Paper and parchment. Very soft, slightly translucent light. Inexpensive and lovely, but fragile and prone to yellowing.
Opal and frosted glass. Diffuses beautifully with no fabric texture, easy to wipe clean, and gives that even milky glow associated with mid-century and modern lighting. Heavier, and glare-free even at higher brightness.
Metal. Opaque, so all light goes down through the opening. Crisp, directional, slightly industrial. Excellent for task lighting, poor for ambient. Check whether the interior is painted white or gold — white gives a cleaner light, gold a warmer one.
Rattan, woven and pleated. Casts patterned light and visible texture on nearby walls, which is a feature rather than a fault. Lets a lot of light through, so use a lower-output bulb.
Color: the decision people underestimate
Light passing through a shade takes on its color. This is the single most overlooked factor in how a lamp performs.
- White and off-white — the most light, the most neutral. Safest choice.
- Cream and natural linen — slightly warmer and softer. Best for cozy living rooms and bedrooms.
- Black and dark shades — very little light through the sides, all of it directed up and down in sharp cones. Dramatic and excellent for a moody scheme, but a poor choice if you need the lamp to actually light the room. Look for a gold or white lining to reclaim some warmth.
- Colored shades — tint everything in the room, including skin tones. Bold and effective in a considered scheme; risky elsewhere.
If a room is feeling cold, switching from a bright white shade to natural linen is a cheaper and more effective fix than changing bulbs.
Fittings: check this before buying
A shade only fits certain hardware. The three common types:
Spider. The most common on US table lamps. A wire frame with a central ring that sits on a threaded harp and is secured with a finial.
Uno. The shade screws directly onto the socket, held between socket and bulb. No harp needed. Common on smaller and bedside lamps.
Clip-on. A wire clip grips the bulb itself. Only works with certain bulb shapes, and generally limited to small shades. Check bulb compatibility, since many LEDs are the wrong shape for clips.
Buying a shade with the wrong fitting is the most common ordering error in this category. Identify your fitting type before you shop, not after.
Frequently asked questions
How do I know what size lampshade to buy?
Make the shade's bottom width roughly equal to the base height, and the shade height about two-thirds of the base height. It must also be wide enough to conceal the bulb and socket completely.
Should a lampshade be wider than the lamp base?
Yes. The shade should always be wider than the widest point of the base — usually by at least a couple of inches — or the lamp looks top-heavy and the hardware shows.
What shape lampshade is most versatile?
A drum shade. Its straight sides distribute light evenly up and down and it suits nearly every base style and interior.
Do dark lampshades make a room too dark?
They block most side light and direct it up and down instead. That is great for drama and accent lighting, but if the lamp is meant to light the room, choose a pale shade or a dark one with a reflective lining.
Can I put any lampshade on any lamp?
No — the fitting has to match. Spider fittings need a harp, uno fittings screw onto the socket, and clip-ons attach to the bulb. Confirm which your lamp uses before ordering.
What is the best lampshade material for soft light?
Linen or opal glass. Both diffuse light evenly, hide the bulb, and avoid the hot spots you get with thin or open shades.
How do I stop a lampshade from glaring?
Three fixes: use a wider or deeper shade so the bulb sits fully inside it, switch to a frosted or opal bulb, or choose an enclosed shape like a dome or mushroom that blocks the bulb from every normal viewing angle.
Want the glare-free option without sizing a shade yourself? Our dimmable mushroom table lamp uses an enclosed dome that hides the bulb entirely. Browse the full lighting collection, or read our guide to choosing the right bulb brightness.
Written by Lumière Home