OpenColor
Standard
A device-independent color identification system built on perceptually uniform LCH color space. One ID, every substrate, every workflow.
One ID. Complete Color Identity.
Every OCS color is identified by a single string encoding its perceptual lightness, chroma, hue, and intended substrate.
Lightness
Perceived brightness (0–100)
Chroma
Color intensity (0–150)
Hue
Color angle (0–360°)
Substrate
Output medium type
Built for Every Workflow
Whether you design on screen, develop for the web, or produce for print — OCS speaks your language.
For Designers
Browse a perceptually organized library. Find harmonies, compare substrates, and export swatches for any tool.
For Developers
Copy CSS, use LCH natively, or integrate via JSON. Every color comes with hex, RGB, and LCH values.
For Print Production
Simulate coated, uncoated, textile, and film substrates. Understand how colors shift across physical media.
Substrate Simulation
Preview any OCS color on 6 substrate types. See real-world shifts in lightness and chroma before production.
Color Picker
Find or create OCS colors from LCH, HEX, or RGB values. Instantly see the nearest library matches.
Full Documentation
Learn the OCS ID system, understand LCH color space, and follow guides tailored to your discipline.
549
Colors
6
Substrates
13
Color Families
LCH
Color Space
Start Using OpenColor Standard
Explore the full library, find your colors, and integrate OCS into your design and development workflow.