Neptune theme

Neptune is a medium contrast theme with a pleasant, deep blue feel. It comes in light and dark variants, while using a single 16-colour palette.

Packages or ports of it are available for Vim and Atom, as well as the Xfce4, RXVT-Unicode (urxvt), and XTERM terminal emulators.


Dark base

282C36 383C46 686C76 A8ACB6

Light base

F0F1F8 E0E1E8 808188 404148

Accent values

A97552 C78956 48B788 3C8CBB
C789A6 B9A552 55AFAF 7A7DCA

Base values from left to right: background, background highlight, secondary text, primary text.

Vim themes

All Prot16 themes (including Neptune) are available as a plugin for Vim. To install them, use your favourite plugin manager. With vim-plug:

Plug 'protesilaos/prot16-vim'

Then specify your choice in .vimrc. Use either the light or dark variant:

" the light variant
colorscheme neptune_light

" or the dark variant
colorscheme neptune_dark

Atom packages

Neptune light available at

Atom GitHub Or run the command apm install neptune-syntax

Neptune dark available at

Atom GitHub Or run the command apm install neptune-dark-syntax

Atom and Vim colour mapping




Primary: Class names, variables, functions, etc.
Secondary: Measurement units, strings, support functions, etc.
Tertiary: Cursor, support classes, etc.

Terminal emulators

For Neptune, the following terminal emulators are supported thus far:

Below are the specs to copy-paste into a terminal that is not supported yet.

282C36 A97552 48B788 B9A552 3C8CBB C789A6 55AFAF E0E1E8 383C46 C78956 404148 686C76 808188 7A7DCA A8ACB6 F0F1F8

Terminal Base values (light theme)
Background: F0F1F8
Foreground: 404148
Cursor: 404148
Bold colour: 404148

Terminal Base values (dark theme)
Background: 282C36
Foreground: A8ACB6
Cursor: A8ACB6
Bold colour: A8ACB6

Palette specs

# Palette variables and values

dbg=282C36 # Dark background
dhl=383C46 # Dark background highlight
dt2=686C76 # Dark background secondary text
dt1=A8ACB6 # Dark background primary text

lbg=F0F1F8 # Light background
lhl=E0E1E8 # Light background highlight
lt2=808188 # Light background secondary text
lt1=404148 # Light background primary text

red=A97552 # Red variant
ora=C78956 # Orange variant
yel=B9A552 # Yellow variant
gre=48B788 # Green variant

cya=55AFAF # Cyan variant
blu=3C8CBB # Blue variant
vio=7A7DCA # Violet variant
mag=C789A6 # Magenta variant
# Terminal colour codes
# corresponding to the palette
# followed by termcol description

dbg=0      # black
red=1      # red
gre=2      # green
yel=3      # yellow
blu=4      # blue
mag=5      # magenta
cya=6      # cyan
lhl=7      # white
dhl=8      # brblack
ora=9      # brred
lt1=10     # brgreen
dt2=11     # bryellow
lt2=12     # brblue
vio=13     # brmagenta
dt1=14     # brcyan
lbg=15     # brwhite

Related projects

Note that this theme is part of the wider Prot16 collection. The Prot16 git repo includes all files (except the Atom packages) for each and every item.

Wish to contribute? Work can be done to port the themes to other applications. The program that handles the process is the Prot16 Generator (a bash script to build themes on demand or to work with other scripts in automating the process).

Application-specific Prot16 repositories:

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Protesilaos Stavrou

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