Different background colors between vim, neovim and neovim in tmux

[ysomad]

Warning: I will close the issue without the minimal vimrc and the reproduce ways.

Problems summary

1.Different background colors in vim and neovim

2. Different background colors in neovim when in tmux

Expected

Wanna set dark background from vim to neovim

Environment Information

• terminal: gnome-terminal
• vim/nvim version: vim (8.1.2269), nvim (v0.5.0-dev+1157-g0ab88c2ea)

Provide a minimal vim rc with less than 50 lines (Required!)

vimrc: https://gist.github.com/Infvmous/8e71e7631a6828f5fcd1e58ed6f210a1 init.vim: https://gist.github.com/Infvmous/6a1ade341f59def2ac1adbe9abb4fbc8

Screen shot (if possible)

vim neovim neovim in tmux

[mhartington]

Please note the install instructions

https://github.com/mhartington/oceanic-next#installation

" Theme
 syntax enable
" for vim 7
 set t_Co=256

" for vim 8
 if (has("termguicolors"))
  set termguicolors
 endif

colorscheme OceanicNext

You're missing termguicolors.

For tmux, you need to enable true colors for tmux.