Currently a work in progress.
Finished:
- enlighten.terminal - terminal.app profile
In Progress:
- A color scheme with multiple language & highlight group support - enlighten.vim
- Accessibility for users across all color scheme implementations.
Download enlighten.terminal and open it with Terminal.app to auto import.
curl -fLo ~/Downloads/enlighten.terminal \
https://raw.githubusercontent.com/her/enlighten/master/enlighten.terminalResearch has shown that text is easier to read on a light background. Users make less mistakes and it's easier on the eyes. However, most themes for both terminal emulators and text editors across the internet cater towards light text on a dark background.
The goal of this project is to develop the world's most beautiful and legible light theme for every day use. It should be accessible to everyone, adaptable to the user, and available on as many platforms as possible. Color choices should be based on a model of readability, easy discernment, and wherever possible should use color theory and science to lead development decisions.
This project is in it's early stages and I wouldn't say that it currently lives up to the stated goals. Going forward changes and developments should seek to uphold the ideals of this project by following it's goals.
| Regular | Bright |
|---|---|
Black |
Bright Black |
Red |
Bright Red |
Green |
Bright Green |
Yellow |
Bright Yellow |
Blue |
Bright Blue |
Magenta |
Bright Magenta |
Cyan |
Bright Cyan |
White |
Bright White |
Minimum contrast ratio requirements for AA grade
Normal text - 4.5:1
Large text - 3:1
Minimum contrast ratio requirements for AAA grade
Normal text - 7:1
Large text - 4.5:1
✅ - Pass
❌ - Fail
Passing requirements for color and brightness:
Color Difference - Minimum 500
Brightness Difference - Minimum 125
👁 - Pass
Compared against a background color of #FFFFFF
Examle of accessible color meansurement values:
| Grade | Contrast Ratio | Color Difference | Brightness Difference |
|---|---|---|---|
| AAA | 21:1 | 765 | 255 |
As a list:
AAA, 21:1, 765, 255
Black #000000 ✅ 👁
AAA, 21:1, 765, 255
Red #C30600 ✅ 👁
AA, 6.3:1, 564, 194
Green #007E00 ✅ 👁
AA, 5.3:1, 639, 182
Yellow #CD7F40 ❌
Fail, 3.1:1, 369, 112
Blue '#006A9D' ✅ 👁
AA, 5.9:1, 502, 175
Magenta #3C2DA2 ✅
AAA, 10.1:1, 498, 193
Cyan #306B6A ✅ 👁
AA, 6.1:1, 504, 166
White #A3AFB6 ❌
Fail, 2.2:1, 245, 83
Bright Black #666666 ✅
AA, 5.7:1, 459, 153
Bright Red #EC0000 ✅ 👁
AA, 4.6:1, 529, 185
Bright Green #008500 ✅ 👁
AA, 4.8:1, 632, 177
Bright Yellow #E9AD53 ❌
Fail, 2:1, 276, 75
Bright Blue #1761BE ✅
AA, 6:1, 455, 170
Bright Magenta #B20F4A ✅
AA, 6.9:1, 498, 185
Bright Cyan #276F6F ✅ 👁
AA, 5.9:1, 504, 166
Bright White #FFFFFF ❌
Fail, 1:1, 0, 0
AAA grade is given for passing all the above requirements.
AA grade will be given for passing Normal Text requirements.
Ruby, Python, Javascript, JSON, SQL, YAML, XML, HTML, CSS, Markdown, Shell, Vim's defaults (Language Constructs, Variable Types, C Family), netrw.
Will add other highlight groups once the above are completed. Possibly next being, Perl, php. Also am considering other add-on syntax groups like NGINX or Docker (which would require extending vim with a syntax library for these technologies).
:h group-name
:h highlight-groups
:h cterm-colors
:w
:so %
:so $VIMRUNTIME/syntax/hitest.vim