Constant libnotcurses_sys::c_api::NCALPHA_HIGHCONTRAST

pub const NCALPHA_HIGHCONTRAST: NcAlpha_u32 = ffi::NCALPHA_HIGHCONTRAST; // 805_306_368u32

NcAlpha_u32 bits indicating NcCell’s foreground color will be high-contrast (relative to the computed background). Background cannot be high-contrast.