3B is D♭ major
Camelot 3B is D♭ major. Five flats, and the last comfortable key on the flat side. Its sharp-side twin is C♯ major at seven sharps, so this key is written D♭ nearly everywhere.
What mixes with 3B
| Move | Position | Key | What it does |
|---|---|---|---|
| Up one | 4B | A♭ major | Lifts the energy. One step clockwise. |
| Down one | 2B | F♯ major | Relaxes it. One step anticlockwise. |
| Switch letter | 3A | B♭ minor | Major to minor on the same notes — the mood changes, the pitches do not. |
Anything further than one step is not a rule you are breaking so much as a judgement you are now making by ear. Two positions away can work; five will fight you.
The scale
D♭ major is spelled D♭ – E♭ – F – G♭ – A♭ – B♭ – C.
Its relative minor, B♭ minor, uses the same seven notes starting from B♭. Same scale, different home note, which is exactly what the letter switch at 3A means.
D♭ major and D♭ minor are not neighbours
The letter switch at 3A does not get you D♭ minor. It gets you B♭ minor — the relative minor, which shares D♭ major's notes but not its tonic.
D♭ minor is a different position entirely: 12A, which the wheel names C♯ minor — the same key written the other way, 3 steps around the ring. Same home note, three accidentals' difference in the key signature — it is always three, for any parallel pair — and far enough apart that the wheel will never suggest one from the other.
That gap is the most common misreading of the whole system. If you want the darker version of the same tonic — D♭ minor under a track in D♭ major — the wheel is not going to hand it to you, and mixing it in is a decision you make with your ears against the rule rather than with it.
In other software
| Notation | What D♭ major shows as |
|---|---|
| Camelot (Mixed In Key, Rekordbox) | 3B |
| Open Key (Traktor) | 8d |
| Key name | D♭ major / C♯ major |
Two systems, same wheel, rotated relative to each other. If a library was tagged in one and read in the other, the letters still mean minor and major but the numbers will not line up.
Why a 3B reading can be wrong
The Camelot code comes from the key, so anything that gets the key wrong gets the code wrong — and tuning is where it usually goes wrong.
Material sitting a semitone below concert pitch does not read as 3B at all. It reads as 8B — C major. A semitone the other way reads as 10B — D major. Both are 5 positions away on the ring, not one. A mixing rule built on that code points at the wrong three records, and nothing tells you until something clashes in front of people.
DropWave measures the tuning before it decides anything, reports the deviation in cents, and puts a confidence band on the answer — so a 3B that was nearly 2B says so.