Can anyone advise how many different shades of blue were used on
interior plastic trim on 69 B-bodies? Mainly interested in A-pillar
covers and kick panels. I bought some replacements on ebay and compared to the
back side of the originals are too dark(almost navy blue). My trim
code is B7. I've tried Herbs Int.Paint on a spare part, not even close.

B7 is your upper door frame color (paint)

A-pillar/kick panel color did change year to year (something like ..... '66-'67 dark blue, '68-'69 blue & '70 bright blue), but .....

are all '69 b-body "blue" a-pillars the same shade of blue or do they differ based on the trim code & car model? I believe they are the same.

Is a Belvedere 4 door sedan with cloth & vinyl bench seat (L1B) the same color as a Charger with leather buckets (CRB) etc.? What car model & interior are we talking about?

Color chart shows 4 different blues, 2 each of gloss and low-gloss. That said, here's what all of mine ('68-'70 B-bodies) were:
Suede dash, column, ashtray, windshield header mldg.
Gloss door & quarter metal and headliner side mldgs.
Molded color for A-pillar mldgs, kick panels, defroster vents, seat hinge covers, seat belt buckle retainers.
Package trays were same as darker seat material, and I believe consoles were as well, if not same shade (different finish) as dash (none of mine were console cars).
The molded plastic parts faded with sun exposure.
On blue interiors, '68 used a light blue on doors/quarter trim, '69s were darker.
The plastic bits in my green-interior '68, '69 & '70 cars were all the same shade of green.
When we'd find these cars in the junkyards & strip their parts, the colors were consistent regardless of model and body.

The plastic trim on a 69 is not supposed to be almost dark blue. It's a bright blue.

Thanks for the info guys.

Dan, the model is a '69 Coronet 440 hardtop, two tone blue vinyl bench.