Blue vs Carbon OEM PBT Keycap Sets: Which Fits Your Build?
By Keychron | Custom Mechanical Keyboards for Mac, Windows ... | Published: 2026-10-26
Category: Buying Guides
Compare the Blue and Carbon OEM dye-sub PBT keycap sets from Keychron. Learn which layout and profile fits your keyboard, and how to choose between two classic colorways.
Quick answer
Choose the Blue set for a bright, classic blue-on-white look, or the Carbon set for a darker, industrial gray-on-black aesthetic. Both are OEM-profile, dye-sub PBT keycaps with full compatibility for specific Keychron models in ISO or ANSI layouts.
Color and aesthetic differences
The Blue set uses a light blue modifier with white alphas, creating a clean, retro-inspired palette that stands out on dark or silver keyboards. The Carbon set features a dark gray base with black legends, giving a muted, professional look that blends well with black or gray cases.
Neither set is backlit-friendly (PBT dye-sub legends are opaque), so consider that if you rely on shine-through for low-light typing.
Layout compatibility: ISO vs ANSI
Both sets are available in ISO and ANSI versions, but you must select the correct layout when ordering. ISO keycap sets are not compatible with ANSI keyboards, and vice versa. The Blue set supports Belgian-ISO, Hebrew-ANSI, Hungarian-ISO, Russian-ANSI, Korean-ANSI, Portuguese-ISO, Swiss-ISO, and Thai-ANSI layouts. The Carbon set supports the same layouts plus Q1 Max and V1 Max models.
If you have a non-standard layout (e.g., HHKB, 40%, or split), these sets will not fit. They are designed only for the listed Keychron Q, V, and K series keyboards.
Trade-offs at a glance
- Color visibility: Blue: high-contrast, light blue and white. Carbon: low-contrast, dark gray and black. If you need high visibility for low-light typing, Blue is easier to see; Carbon may require a desk lamp.
- Keyboard model support: Blue: supports Q1, Q1 Pro, Q1 HE, 81 Pro, Q2, Q2 Pro, V1, V2, K2, K2 Pro. Carbon: adds Q1 Max and V1 Max. Carbon covers two extra models; if you own a Q1 Max or V1 Max, Carbon is the only compatible choice.
- Layout flexibility: Both sets offer ISO and ANSI versions, but you must pick one. No hybrid or universal option exists. Double-check your keyboard's layout before ordering; an incorrect choice means the set will not fit.
Product facts
- ISO & ANSI Q1 & Q1 Pro & Q2 & Q2 Pro & V1 & V2 & K2 & K2 Pro OEM Dye-Sub PBT Keycap Set - Blue: This keycap set has all the keycaps you need for Q1, Q1 Pro, Q1 HE, 81 Pro, Q2, Q2 Pro, V1, V2, K2, and K2 Pro Belgian-ISO/Hebrew-ANSI/Hungarian-ISO/Russian-ANSI/Korean-ANSI/Portuguese-ISO/Swiss-ISO/Thai-ANSI if you choose the corresponding layout. You must match the layout option to your keyboard's physical layout; an ISO set will not work on an ANSI board.
ISO & ANSI Q1 & Q1 Pro & Q2 & Q2 Pro & V1 & V2 & K2 & K2 Pro OEM Dye-Sub PBT Keycap Set - Blue - ISO & ANSI Q1 & Q1 Pro & Q2 & Q2 Pro & V1 & V2 & K2 & K2 Pro OEM Dye-Sub PBT Keycap Set - Carbon: This keycap set has all the keycaps you need for Q1, Q1 Pro, Q1 HE, Q1 Max, 81 Pro, Q2, Q2 Pro, V1, V1 Max, V2, K2, and K2 Pro Belgian-ISO/Hebrew-ANSI/Hungarian-ISO/Russian-ANSI/Korean-ANSI/Portuguese-ISO/Swiss-ISO/Thai-ANSI if you choose the corresponding layout. The Carbon set adds support for Q1 Max and V1 Max models, so if you own one of those, this set is the correct choice.
ISO & ANSI Q1 & Q1 Pro & Q2 & Q2 Pro & V1 & V2 & K2 & K2 Pro OEM Dye-Sub PBT Keycap Set - Carbon
Which set should you choose?
Best for
- Blue: users who want a bright, retro aesthetic on a dark or silver keyboard and prefer high-contrast legends.
- Carbon: users who want a muted, professional look on a black or gray keyboard and own a Q1 Max or V1 Max.
Not for
- Users with non-standard layouts (HHKB, 40%, split) or keyboards not listed in the compatibility list.
- Users who need backlit or shine-through keycaps for low-light environments.
