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vectorcraft/docs
bflatasticandClaude Opus 5.5 f043a1a392 #1032: spot colours defined in Lab keep their Lab values
A .ai or PDF whose spot colours are defined in Lab opened them wrong:
- the PDF part gives such an ink an ICC Lab profile as its alternate
  space ([/ICCBased profile], 3 components), which was read as RGB, so
  the Lab values were clamped into wildly wrong colours (PANTONE 249 C
  came in yellow). A profile whose Alternate is [/Lab ...], or whose
  header names the Lab data colour space, is now read as Lab;
- the editing data writes them as `c m y k L a b (name) tint 2 Xx`,
  type 2 being Lab, and only the CMYK equivalent was read. Type 2 now
  gives the Lab colour, in the swatches and on the art.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-10-11 07:06:05 +07:00
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