Horizon is a beautifully warm dark colorscheme for Vim & inspired by Visual Studio Code Horizon Theme

• Use Vim Plug

Plug 'ntk148v/vim-horizon'

• Other Vim Plugin Management Tools should be the same.

Put something like this in your vimrc/init.vim:

" if you don't set this option, this color might not correct
set termguicolors

colorscheme horizon

" lightline
let g:lightline = {}
let g:lightline.colorscheme = 'horizon'

" or this line
let g:lightline = {'colorscheme' : 'horizon'}

To apply lightline colorscheme without reloading:

:let g:lightline.colorscheme = 'horizon'
:call lightline#init()
:call lightline#colorscheme()

I only tested vim-horizon with Neovim, but it might work with Vim as well.