Microsoft/vscode

[css] Lab colors and other CSS Color Module Level 4 features

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#43,111 opened on Feb 7, 2018

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 (4 comments) (18 reactions) (1 assignee)TypeScript (74,848 stars) (10,221 forks)batch import
css-less-scssfeature-requesthelp wanted

Description

See the CSS Color Module Level 4 specification.

While the specification is still a draft and browsers don't support these features yet, there already exists a PostCSS plugin that (partially) implements them, so it's actually already possible to use at least a part of them.

.example {
	background-color: lab(33 43 -47);
	box-shadow: 0 0 20px lch(54 107 41 / 10%);
}

Would be nice to get previews for those colors in VS Code like it's shown for rgb/rgba/hsl colors.

Contributor guide

Tech stack
typescriptcss
Domain
frontend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
knowledge of CSS Color Module Level 4understanding of VS Code color provider API
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Review existing color preview implementation in VS Code for hex/rgb/hsl colors, likely in 'src/vs/editor/contrib/colorPicker'. The PostCSS plugin at https://github.com/jonathantneal/postcss color lab can serve as a reference for parsing lab() and lch() functions. The issue mentions that browser support is pending, so focus on adding syntax highlighting and preview via VS Code's DocumentColorProvider interface.
[css] Lab colors and other CSS Color Module Level 4 features · Microsoft/vscode#43111 | Good First Issue