apca-introduction

commit

5a2f7c7b387de65a01851fb47286d19ab915636f

parent

3abe9e6cef2e0f75cfe36dff19fb0184a244cd13

Author

Tobias Bengfort <tobias.bengfort@posteo.de>

Date

2022-08-19 16:11

comment on different exponents in APCA

Diffstat

1 files changed, 6 insertions, 0 deletions

diff --git a/analysis.md b/analysis.md

@@ -343,6 +343,12 @@ can have values between 0.31 and 0.72.
  343   343 Given that model, WCAG 2.x is on the lower (darker) end of possible exponents,
  344   344 while APCA goes to the other (lighter) extreme.
  345   345 
   -1   346 It seems reasonable to use a lower exponent for light-on-dark color pairs.
   -1   347 First, because the background color itself is often a significant part of the
   -1   348 lighting conditions, and second, because some software automatically switches
   -1   349 to dark mode at night. Surprisingly, APCA does the exact opposite and uses
   -1   350 higher exponents in that situation.
   -1   351 
  346   352 ## Spatial frequency
  347   353 
  348   354 Smaller text is generally harder to read than bigger text. In a more general