Most RGB keyboard photos lie a little. The glow looks even in the shot. Then you sit down, and half the board is dark while three keys are blinding.
The keycaps decide how that light behaves. Pudding keycaps, clear keycaps, and shine-through sets all get called "RGB keycaps," but they put the light in different places. Pick the wrong one and you will spend an evening wondering why your expensive board looks flat.
Here is the short version before the details:
- Pudding keeps the top opaque and lets light out through the sides. You get a glowing ring around every key, and the legends stay readable.
- Clear is transparent everywhere. Maximum glow, and the whole board becomes one light source.
- Shine-through is an opaque key with a translucent legend. Light comes out of the letters only.
- Side-print moves the legend to the front face. Less glare, and it works well with south-facing LEDs.
Everything else is a variation on those four.
What each type is actually made of
"Pudding" does not describe a material. It describes a shape: an opaque top layer sitting on a translucent lower half. Many sets use a PBT top with a polycarbonate (PC) bottom, glued or molded together. Some cheaper ones are all PC, and a few are ABS. The join line is visible on the side of the cap, and that is the ring you see glowing.
Two things to check before buying pudding caps. First, whether the sides are frosted or polished. Frosted spreads the light into a soft band; polished looks sharper but shows fingerprints. Second, whether the legends are shine-through. Some pudding sets have opaque legends, so the letters go dark the moment you turn the backlight on.
Clear caps are usually a single piece of polycarbonate, around 1.4mm to 1.5mm thick. The important detail is the legend method. Dye-sublimated shine-through legends sit in the plastic and last a long time. UV-printed legends are cheaper to make and wear faster on WASD and the spacebar. If a listing says "clear PC" but not how the legends are printed, ask.
Shine-through is the oldest trick in the book. The cap is opaque, the legend is translucent, and light exits through the letters. Classic ABS double-shot sets do this well. PBT shine-through exists too, but the legend is often a separate translucent insert, and quality varies more. If a PBT set claims shine-through, look closely at the photos: the legend should glow evenly, not just at the edges.
Side-print puts the legend on the front face of the cap, the side that looks at you. Nothing glows on top. On a board with south-facing LEDs, this solves two problems at once: the legend is lit cleanly, and the light does not bounce off the top of a tall Cherry cap into your eyes.
Frosted caps are clear caps with a diffused surface. Same idea, softer output, fewer visible smudges.
How the light actually behaves
| Style | What glows | RGB off | Legibility | Sound | Main annoyance |
|---|---|---|---|---|---|
| Pudding | Sides of each cap, in a ring | Looks like grey two-tone caps | Good, legends stay opaque | Deeper if the top is PBT | Ring can look busy on dense 65% boards |
| Clear | Top, sides, everything | Washed-out translucent grey | Good if legends are dye-sub | Higher pitched, clackier | Smudges, glare, light bleed between keys |
| Shine-through | Legends only | Normal opaque caps | Excellent in the dark, normal in daylight | Depends on the base material | Dim legends on north-facing LEDs |
| Side-print | Front legends | Normal opaque caps | Good if you sit square to the board | Depends on material | Legends are hidden at an angle |
| Frosted | Whole cap, diffused | Soft cloudy look | Good | Similar to clear | Can look grey rather than "glowing" |
A clear set on a black plate with per-key RGB looks like a light-up grid. The same set on a white plate looks brighter and softer, because the plate bounces light back through the caps. Neither is wrong. Just know that the plate is doing half the work in the photos you see online.
Pudding vs clear, side by side
Pudding is the safer choice. The top stays opaque, so your legends are readable in daylight and at night. The glow is contained to a ring around each key, which reads as "RGB keyboard" without turning the whole board into a lamp. On a 60% or 65% board with tight key spacing, those rings start to merge, and the effect gets busy. On a TKL or full-size board, it looks tidy.
Clear is the louder choice. Light comes through the top and the sides, so every key contributes to one big glow. In a dark room, a clear board can be genuinely distracting. In photos, it is unbeatable, especially with a glass or acrylic case. The trade-offs are real: fingerprints show within a day, dust collects in the corners, and the legends have to be good or the board looks like a blank grid.
If you want one rule: buy pudding keycaps for daily typing with RGB on, buy clear for a display build or photography, and buy shine-through or side printed keycaps if you mostly type in the dark and hate light spill.
The fit checks that matter more than the finish
No glow style survives a compatibility mistake. Run these five checks before you pick a colorway.
1. Stem. These sets are for MX-style switches: Cherry MX, Gateron, Kailh, Outemu, and most clones. Optical switches, Topre, and laptop-style scissor boards are out. If you are unsure, pull one keycap and look at the stem: a cross shape is what you want.
2. Key count and layout. A 115-key set covers a full-size ANSI board and most of the extras a 75% or 65% needs. A 104-key set will leave gaps on some compact boards. ISO boards need an ISO Enter and the extra 1u next to Left Shift, and not every "115-key" kit includes them. Our ANSI vs ISO guide shows how to check the kit diagram in under a minute.
3. Profile height. Clear and pudding caps are usually Cherry profile. Cherry is shorter than OEM, which matters on boards with north-facing LEDs: the LED sits under the top of the cap, and a tall cap can block it. If your board has north-facing LEDs and you want even legends, side-print is the safer bet. For a full comparison of heights and shapes, see the keycap profiles guide.
4. LED direction and plate color. South-facing LEDs light the front of the cap and play nicely with side-print. North-facing LEDs light the top and can leave the front legend dim. A white plate reflects more light than a black one, so the same set will look different on two boards. This is why "mine doesn't glow like the photo" is such a common complaint.
5. Per-key vs zone RGB. Clear caps amplify everything. With per-key lighting, that is the point. With zone lighting, you get four large color blobs, and the board looks cheaper than it is. Pudding hides zone lighting better because the opaque top breaks up the color.
Sound and feel
Material changes the sound more than the finish does.
A pudding set with a PBT top sounds drier and deeper than a full PC set. Clear PC caps have thinner, stiffer walls and tend to sound higher pitched, with more of a clack. On a gasket-mounted board with foam, the difference is noticeable but not dramatic. On a tray-mount board with an aluminum plate, clear caps can make an already bright board sound sharper.
If sound is your main concern, pick the material first and the glow style second. The PBT vs ABS guide covers the basics, and Custom Keycaps 101 explains how profile and wall thickness fit into the picture.
How they age
Polycarbonate is tough, but it is not immune to sunlight. Clear caps can yellow after long exposure to direct UV, which is why a desk next to a south-facing window is the worst place for a display build. Keep the board out of direct sun when you are not using it.
Fingerprints are the other issue. Polished clear shows every touch. Frosted clear hides most of it. Clean either with lukewarm water and a drop of mild dish soap, then dry with a microfiber cloth. Skip alcohol and harsh cleaners on PC; they can haze the surface over time.
Legends age differently. Dye-sub shine-through legends are part of the plastic and hold up well. UV-printed legends on budget clear sets can fade on the most-used keys within months. If the listing does not say dye-sub, assume UV print.
Which one should you buy?
Match the cap to the room, not to the product photo.
- First RGB board, typing every day: pudding. Readable legends, contained glow, fewer distractions.
- Display build, glass case, white plate: clear. Accept the smudges and keep it out of the sun.
- Dark room, hate light spill: shine-through, or side-print if your LEDs face south.
- Office or daylight desk: skip all three and buy a good PBT set. The glow does nothing at 2pm.
- Compact 65% or 75%: check the kit map first. A pretty set that leaves two switches naked is not a bargain.
Where our sets fit
We do not currently stock a pudding keycaps set. If that is the look you want, the comparison above should help you judge other listings.
If you want the clear look, the Crystal Clear PC 115-key set is fully transparent polycarbonate with dye-sub shine-through legends, Cherry profile, and a keycap puller in the box. It is built for per-key RGB and white or acrylic plates, and it is the set I would pick for a glass-theme build.
If you like the idea of lit legends without a fully transparent cap, the Ukiyo-e Great Wave set uses side printing on PBT. The legend glows, the artwork stays readable, and the top of the cap does not throw light back at you.
The TopoLine side-lit set takes the same idea in a quieter direction: topography lines, side-lit legends, Cherry profile.
And if you want zero glow, the Point Stream 135-key PBT set is a straight dye-sub set with no light bleed at all.
FAQ
Do pudding keycaps fit any keyboard?
Only if the board uses MX-style switches and the kit covers your layout. Check the stem, the key count, and whether your board is ANSI or ISO. Optical and Topre boards need different caps entirely.
Are clear keycaps good for typing?
Yes, as long as the legends are durable. The bigger issues are fingerprints and glare in a dark room, not typing feel. If you type in daylight, a clear set behaves like any other Cherry-profile cap.
Do shine-through keycaps work without RGB?
The legends are still visible, but you lose the effect you paid for. On a board with no backlight, a normal double-shot or dye-sub set is usually the better buy.
Pudding or clear for gaming?
Pudding, for most people. The legends stay readable and the glow does not wash out your peripheral vision in a dark room. Clear is better for photos and display builds than for long sessions.
Why do my clear keycaps look cloudy?
Either the caps are frosted rather than polished, or the surface has picked up micro-scratches and skin oil. Clean with mild soap first. If they still look cloudy, the finish is doing it on purpose.
Can I mix pudding and opaque keycaps?
Yes. Keep the same profile and row heights, or the board will feel uneven. A common mix is pudding modifiers with opaque alphas, which tones down the glow without losing the accent.
Will polycarbonate keycaps yellow?
They can, with enough UV exposure. Normal indoor use is slow. Direct sun for months is not. Store the board away from a window if the clear look matters to you.
Pick the light you actually want, then check the fit. The prettiest set in the photo is useless if two switches are bare or the legends fade in a season.
— The KeycapsHub Team