apca-introduction

commit

f837f7f885d2465390c83e43e832a4ddbe4c8517

parent

76284baf84c658bfd0e52305802618977491110f

Author

Tobias Bengfort <tobias.bengfort@posteo.de>

Date

2022-07-22 05:20

rm obsolete note on different color ranges

Diffstat

1 files changed, 6 insertions, 6 deletions

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

@@ -255,12 +255,12 @@ variants. As we can see, they correlate in both cases, but the modified WCAG
  255   255 In the bottom row we see two more scatter plots. This time the X axis
  256   256 corresponds to foreground luminance and the Y axis corresponds to background
  257   257 luminance. The color of the dots indicated the differences between the
  258    -1 respective formulas, calculated as `log(apca / wcag)`. Note that the scaling of
  259    -1 colors is different in the two plots. As we can see, the biggest differences
  260    -1 between APCA and WCAG 2.x are in areas where one color is extremely light or
  261    -1 extremely dark. For light colors, APCA predicts an even higher contrast
  262    -1 (difference is in the same direction as contrast polarity). For dark colors,
  263    -1 APCA predicts a lower contrast (difference is inverse to contrast polarity).
   -1   258 respective formulas, calculated as `log(apca / wcag)`. As we can see, the
   -1   259 biggest differences between APCA and WCAG 2.x are in areas where one color is
   -1   260 extremely light or extremely dark. For light colors, APCA predicts an even
   -1   261 higher contrast (difference is in the same direction as contrast polarity). For
   -1   262 dark colors, APCA predicts a lower contrast (difference is inverse to contrast
   -1   263 polarity).
  264   264 
  265   265 To sum up, the APCA contrast formula is certainly not as obvious a choice as
  266   266 the one from WCAG 2.x. I was not able to find much information on how it was