Hue

A professional screen colour picker for designers, engineers, architects, and specifiers. Pick any colour from your screen and identify it across twelve colour systems — including RAL, BS and NCS standards that other pickers do not carry.

Linux · Windows · macOS · Single executable · No dependencies

Download free Documentation

All software

The full range

Available now

Hue

Professional screen colour picker. 12 colour systems, 950 colours, single executable.

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Free for non-commercial use

All software is free for personal and non-commercial use. No subscription, no trial period, no feature limits.

GPG-signed releases

Every release is signed. Verify what you download is exactly what was published. Older versions remain in the library.

Independent development

One person. No commissions, no bespoke work, no outside deadlines. Software ships when it is ready.

Hue — colour picker

950 colours. 12 formats. One app.

Pick any colour from your screen and instantly identify it across twelve colour systems — including professional trade and industry standards that other colour pickers simply do not carry.

Live screen capture
Pixel-accurate magnifier
RAL Classic & Design
BS4800, BS381C, BS5252
NCS support
HTML/CSS Named
Harmony tools
Export to GPL, CSS, SCSS
Dark, light & system theme
Reassignable hotkeys
Session persistence
No dependencies

Download Hue Read the manual

Hue — colour systems

What Hue includes

System	Colours	Used for
HTML/CSS Named	148	Web and digital design
RAL Classic	217	European industrial standard — paints, coatings, plastics
RAL Design	69	Interior and product design
BS4800	93	UK building and construction paints
BS5252	237	UK colour coordination framework
NCS	95	Scandinavian and international interior and architecture
BS381C	91	UK industrial and military identification colours

Installation

Get started

tar -xzf hue-1.0.0-linux-x86_64.tar.gz
cd hue-1.0.0
sudo bash install.sh

Launch from any terminal with hue, or find Hue in your application menu under Graphics.

Ubuntu 24.04 or later · glibc 2.39+ · 64-bit

Download the Windows installer from the library and run it.

Windows installer coming soon — check the Software Library for availability.

Windows 10 or 11 · 64-bit only

Download the macOS release from the library.

macOS release coming soon — check the Software Library for availability.

macOS 11 (Big Sur) or later

Download Hue Read the manual Verify your download

Commissions and requests: Bad Kitty Software does not accept commissions, bespoke work, or collaborations. All software is developed to its own schedule. Suggestions are welcome via the contact page but cannot be guaranteed to be acted upon. Accessibility improvements for users with disabilities are the one exception considered.