Catalog app · RISC-V VM

Run pastel in the browser

Generate, convert, analyze and manipulate colors from the command line.

Try it live

Nothing is downloaded until you press Run.

catalog app

Convert a color between notations

Installs pastel 0.12.0 from the signed catalog (every chunk is verified before it is written), then runs the commands below in the VM's shell.

bash

pastel format hex rebeccapurple
pastel format rgb '#a984f5'
pastel format hsl orange

loading…

Expected output

$ pastel format hex rebeccapurple
#663399
$ pastel format rgb '#a984f5'
rgb(168, 132, 245)
$ pastel format hsl orange
hsl(39, 100.0%, 50.0%)

What it is

pastel parses colors in many notations (names, hex, rgb, hsl, lab) and converts, mixes, lightens, sorts or generates palettes from them. In the browser it is a handy color utility inside docs and design tooling.

Package facts

version: 0.12.0
runs on: RISC-V VM (elf-app, riscv64gc-linux-musl)
download: 582 kB compressed · 1 file
command: pastel
requires: nothing else — a static binary
license: MIT OR Apache-2.0 (upstream)
upstream: github.com/sharkdp/pastel
categories: Showcase
catalog: generation 12, Ed25519-signed

Install and run it from your page

With the SDK, installApp resolves pastel in the signed index, fetches its content-addressed chunks from the CDN, verifies each one and writes the files into the VM. Details in Installing catalog apps.

javascript

import { createNano } from "@userland-run/nano-sdk";

const nano = await createNano({ image: { wasm: "/nano/console.wasm" }, ramMB: 512 });
await nano.installApp("pastel"); // signature-verified, cached in OPFS

const r = await nano.shExec("pastel format hex rebeccapurple");
console.log(r.stdout);

Typical usage of the upstream command-line tool: