Minimal and Clean Vim Airline Theme

If you're using Vim Airline, there are many beautiful themes to pick from. But I personally like to remove the noise and use color sparingly.

This theme has status line background color and no bright highlights in normal mode. When color is used, it's minimal and only highlights some (arguably) important information.

Edit (January 27, 2020): I was recently asked by Rishabh Mehta about the details of my setup to achieve this look. Here it is:

Font: Fira Code https://github.com/tonsky/FiraCode
Terminal vim (not gvim). Currently using NeoVim and works just the same.
At the time of this post, I was using iTerm2 (https://iterm2.com/) with 165% line height. Currently I'm using kitty terminal (https://sw.kovidgoyal.net/kitty/) with 150% line height.
Color scheme: Gruvbox (https://github.com/morhetz/gruvbox). Although I rotate between my absolute favorite: Ayu Mirage (https://github.com/ayu-theme/ayu-vim) and my latest Photon (https://github.com/axvr/photon.vim)

Normal and Normal Modified Mode

Normal mode has no highlighting, no background colors. The normal mode orange is used to indicate unsaved changes.

Normal and Normal-modified mode

Insert and Visual Mode

Insert mode is green for go!

Insert and Visual mode.

Replace and Select Mode

Replace and Select mode

Active and Inactive Split

Removed much of the information from the inactive pane when using splits. This keeps the focus on the active pane without adding color.

Inactive split hides most of the information, keeping focus on the active pane

Getting The Theme

I don't have a name for it, currently it's temporarily called transparent.vim, eventually I'll make a pull request but for now, you can copy the contents below.

NeoVim
~/.local/share/nvim/plugged/vim-airline-themes/autoload/airline/themes/transparent.vim

Vim
~/.vim/plugged/vim-airline-themes/autoload/airline/themes/transparent.vim

Edit (July 16, 2020): For completion, João Paulo Pesce sent me a snippet to colorize Airline errors, see added section at the bottom. I tested with Syntastic and it looks much better :)

" Colors
let s:gray     = [245, '#3f4b59']
let s:darkgray = [245, '#1d1f21']
let s:golden   = [143, '#BBE67E']
let s:pink     = [131, '#F07178']
let s:blue     = [ 67, '#D4BFFF']
let s:orange   = [166, '#ffae57']
let s:outerfg  = [ 16, '#8d96a1']
let s:outerfgi = [ 16, '#2f3d4d']

" Backgrounds
let s:outerbg  = [ 16, 'NONE']
let s:innerbg  = [234, 'NONE']

" Normal mode
let s:N1 = [s:outerfg[1], s:outerbg[1], s:outerfg[0], s:gray[0]]
let s:N3 = [s:gray[1]   , s:innerbg[1], s:gray[0]   , s:innerbg[0]]

" Normal mode - modified
let s:NM1 = [s:darkgray[1], s:orange[1], s:darkgray[0], s:orange[0]]
let s:NM3 = [s:orange[1]  , s:outerbg[1], s:orange[0], s:darkgray[0]]

" Insert mode
let s:I1 = [s:darkgray[1], s:golden[1], s:outerfg[0], s:golden[0]]
let s:I3 = [s:golden[1]  , s:innerbg[1], s:golden[0], s:innerbg[0]]

" Visual mode
let s:V1 = [s:darkgray[1], s:pink[1], s:outerfg[0], s:pink[0]]
let s:V3 = [s:pink[1]    , s:innerbg[1], s:pink[0], s:innerbg[0]]

" Replace mode
let s:R1 = [s:darkgray[1], s:blue[1], s:outerfg[0], s:blue[0]]
let s:R3 = [s:blue[1], s:innerbg[1], s:blue[0], s:innerbg[0]]

" Inactive pane
let s:IA = [s:darkgray[1], s:outerbg[1], s:innerbg[0], s:innerbg[0]]
let s:IAc = [s:gray[1], s:outerbg[1], s:outerbg[0], s:outerbg[0]]

let g:airline#themes#transparent#palette = {}
let g:airline#themes#transparent#palette.accents = {
    \ 'red': ['#d70000', '', 160, '', '']}

let g:airline#themes#transparent#palette.inactive = {
    \ 'airline_a': s:IA,
    \ 'airline_b': s:IA,
    \ 'airline_c': s:IAc,
    \ 'airline_x': s:IA,
    \ 'airline_y': s:IA,
    \ 'airline_z': s:IA}

let g:airline#themes#transparent#palette.inactive_modified = {
    \ 'airline_a': s:IA,
    \ 'airline_b': s:IA,
    \ 'airline_c': s:NM3,
    \ 'airline_x': s:IA,
    \ 'airline_y': s:IA,
    \ 'airline_z': s:IA}

let g:airline#themes#transparent#palette.normal = {
    \ 'airline_a': s:N1,
    \ 'airline_b': s:N3,
    \ 'airline_c': s:N3,
    \ 'airline_x': s:N3,
    \ 'airline_y': s:N3,
    \ 'airline_z': s:N3}

let g:airline#themes#transparent#palette.normal_modified = {
    \ 'airline_a': s:NM1,
    \ 'airline_b': s:N3,
    \ 'airline_c': s:N3,
    \ 'airline_x': s:N3,
    \ 'airline_y': s:N3,
    \ 'airline_z': s:NM3}

let g:airline#themes#transparent#palette.insert = {
    \ 'airline_a': s:I1,
    \ 'airline_b': s:N3,
    \ 'airline_c': s:N3,
    \ 'airline_x': s:N3,
    \ 'airline_y': s:N3,
    \ 'airline_z': s:I3}
let g:airline#themes#transparent#palette.insert_modified = {}

let g:airline#themes#transparent#palette.replace = {
    \ 'airline_a': s:R1,
    \ 'airline_b': s:N3,
    \ 'airline_c': s:N3,
    \ 'airline_x': s:N3,
    \ 'airline_y': s:N3,
    \ 'airline_z': s:R3}
let g:airline#themes#transparent#palette.replace_modified = {}

let g:airline#themes#transparent#palette.visual = {
    \ 'airline_a': s:V1,
    \ 'airline_b': s:N3,
    \ 'airline_c': s:N3,
    \ 'airline_x': s:N3,
    \ 'airline_y': s:N3,
    \ 'airline_z': s:V3}
let g:airline#themes#transparent#palette.visual_modified = {}


" Warnings
let g:airline#themes#transparent#palette.normal.airline_warning = s:NM1

let g:airline#themes#transparent#palette.normal_modified.airline_warning =
    \ g:airline#themes#transparent#palette.normal.airline_warning

let g:airline#themes#transparent#palette.insert.airline_warning =
    \ g:airline#themes#transparent#palette.normal.airline_warning

let g:airline#themes#transparent#palette.insert_modified.airline_warning =
    \ g:airline#themes#transparent#palette.normal.airline_warning

let g:airline#themes#transparent#palette.visual.airline_warning =
    \ g:airline#themes#transparent#palette.normal.airline_warning

let g:airline#themes#transparent#palette.visual_modified.airline_warning =
    \ g:airline#themes#transparent#palette.normal.airline_warning

let g:airline#themes#transparent#palette.replace.airline_warning =
    \ g:airline#themes#transparent#palette.normal.airline_warning

let g:airline#themes#transparent#palette.replace_modified.airline_warning =
    \ g:airline#themes#transparent#palette.normal.airline_warning


" Errors
let g:airline#themes#transparent#palette.normal.airline_error = s:V1

let g:airline#themes#transparent#palette.normal_modified.airline_error =
      \ g:airline#themes#transparent#palette.normal.airline_error

let g:airline#themes#transparent#palette.insert.airline_error =
      \ g:airline#themes#transparent#palette.normal.airline_error

let g:airline#themes#transparent#palette.insert_modified.airline_error =
      \ g:airline#themes#transparent#palette.normal.airline_error

let g:airline#themes#transparent#palette.insert_modified.airline_error =
      \ g:airline#themes#transparent#palette.normal.airline_error
 
let g:airline#themes#transparent#palette.visual.airline_error =
      \ g:airline#themes#transparent#palette.normal.airline_error

let g:airline#themes#transparent#palette.visual_modified.airline_error =
      \ g:airline#themes#transparent#palette.normal.airline_error
 
let g:airline#themes#transparent#palette.replace.airline_error =
      \ g:airline#themes#transparent#palette.normal.airline_error

let g:airline#themes#transparent#palette.replace_modified.airline_error =
      \ g:airline#themes#transparent#palette.normal.airline_error

About Me

I'm a software engineer and mechanical engineer. I studied control systems at the University of California, Irvine and hold a Masters degree in Mechanical and Aerospace Engineering. My broad background helps me quickly learn, adapt and stay passionate about finding pragmatic solutions to complicated problems.