According to the current version of the style guide, base03 should be used as the background color for selected items. It is not specified what to use as the foreground color.
In Sakura - a light theme, using base05 as the foreground causes bad contrast.
If we change the foreground to base00, this is improved.
However, base00 as the foreground causes bad contrast with Catppuccin Frappe - a dark theme.
This is improved if we use the original setting of base05.
Suggested specification
I suggest changing the background to base02. This looks correct under both schemes, and is listed in the original base16 specification.
This may require some changes to existing modules which are following the old specification.
Current specification
According to the current version of the style guide,
base03
should be used as the background color for selected items. It is not specified what to use as the foreground color.In Sakura - a light theme, using
base05
as the foreground causes bad contrast.If we change the foreground to
base00
, this is improved.However,
base00
as the foreground causes bad contrast with Catppuccin Frappe - a dark theme.This is improved if we use the original setting of
base05
.Suggested specification
I suggest changing the background to
base02
. This looks correct under both schemes, and is listed in the original base16 specification.This may require some changes to existing modules which are following the old specification.