# Colour Science for Python - **Canonical URI:** https://www.vioscale.ai/software/colour-science-for-python - **Category:** Color Tools - **Homepage:** https://www.colour-science.org - **Also known as:** colour-science-for-python - **Profile claimed by vendor:** no - **Last updated:** 2026-08-26T19:15:38.785Z ## Vioscale score **34.1 / 100**, confidence 21% (low). Computed 2026-09-01. _(updating — computed under an earlier model version or past its freshness window.)_ Composite of weighted, independently-sourced signals (no user reviews, no vendor payment). | Signal | Score | Weight | Contribution | Evidence present | |---|--:|--:|--:|:--:| | capabilities | 0 | 0.07844444444444446 | 0 | - | | repo_stars | 64.6 | 0.026 | 1.7 | ✓ | | integrations | 0 | 0.07033333333333334 | 0 | - | | dependent_projects | 33 | 0.063 | 2.1 | ✓ | | dev_activity | 41.6 | 0.094 | 3.9 | ✓ | | release_cadence | 0 | 0.052 | 0 | ✓ | | security_posture | 0 | 0.073 | 0 | - | | package_downloads | 0 | 0.136 | 0 | - | | security_score | 42 | 0.042 | 1.8 | ✓ | | community_qa_activity | 0 | 0.063 | 0 | - | ## Pricing _As of 2026-08-18, [verify at source](https://www.colour-science.org). Independently observed._ Open source · Free tier ## About Colour Science for Python is an open-source library providing comprehensive tools for color science work, including color conversion, chromatic adaptation, color appearance modeling, colorimetry, and color difference calculations across multiple color spaces and standards. _Independently observed._ ## Platform & deployment - **Deployment:** Self-hosted ## Release history | Version | Date | Type | |---|---|---| | [v0.4.7](https://github.com/colour-science/colour/releases/tag/v0.4.7) | 2025-12-06 | stable | | [v0.4.6](https://github.com/colour-science/colour/releases/tag/v0.4.6) | 2024-10-11 | stable | | [v0.4.5](https://github.com/colour-science/colour/releases/tag/v0.4.5) | 2024-10-10 | stable | | [v0.4.4](https://github.com/colour-science/colour/releases/tag/v0.4.4) | 2023-12-17 | stable | | [v0.4.3](https://github.com/colour-science/colour/releases/tag/v0.4.3) | 2023-08-26 | stable | | [v0.4.2](https://github.com/colour-science/colour/releases/tag/v0.4.2) | 2022-11-29 | stable | | [v0.4.1](https://github.com/colour-science/colour/releases/tag/v0.4.1) | 2022-02-25 | stable | | [v0.4.0](https://github.com/colour-science/colour/releases/tag/v0.4.0) | 2022-02-20 | stable | | [v0.3.16](https://github.com/colour-science/colour/releases/tag/v0.3.16) | 2020-11-27 | stable | | [v0.3.15](https://github.com/colour-science/colour/releases/tag/v0.3.15) | 2020-01-25 | stable | | [v0.3.14](https://github.com/colour-science/colour/releases/tag/v0.3.14) | 2019-10-26 | stable | | [v0.3.13](https://github.com/colour-science/colour/releases/tag/v0.3.13) | 2019-10-13 | stable | | [v0.3.12](https://github.com/colour-science/colour/releases/tag/v0.3.12) | 2019-03-24 | stable | | [v0.3.11](https://github.com/colour-science/colour/releases/tag/v0.3.11) | 2018-02-19 | stable | | [v0.3.10](https://github.com/colour-science/colour/releases/tag/v0.3.10) | 2017-12-02 | stable | _… and 5 earlier release(s)._ ## Security & compliance Known vulnerabilities: 0 (0 in the last 12 months) ([source](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=colour-science&per_page=100)). A count reflects scale and disclosure, not quality. ## Facts Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule. ### market | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | [link](https://www.colour-science.org) | 2026-08-18 | 75% (high) | ### pricing | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | pricing.free_tier | yes | [link](https://www.colour-science.org) | 2026-08-18 | 60% (medium) | | pricing.model | open_source | [link](https://www.colour-science.org) | 2026-08-18 | 60% (medium) | | pricing.price_level | free | [link](https://www.colour-science.org) | 2026-08-18 | 60% (medium) | ### activity | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | activity.commits_last_30d | 20 | [link](https://github.com/colour-science/colour/pulse) | 2026-08-26 | 65% (medium) | ### adoption | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | adoption.github_stars | 2,642 | [link](https://github.com/colour-science/colour) | 2026-08-26 | 90% (high) | | adoption.dependent_repos | 94 | [link](https://packages.ecosyste.ms/api/v1/packages/lookup?repository_url=https%3A%2F%2Fgithub.com%2Fcolour-science%2Fcolour) | 2026-08-26 | 85% (high) | ### language | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | language.primary | Python | [link](https://github.com/colour-science/colour) | 2026-08-26 | 90% (high) | ### license | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | license.spdx | BSD-3-Clause | [link](https://github.com/colour-science/colour) | 2026-08-26 | 95% (high) | ### release | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | release.cadence_days | 223 | [link](https://github.com/colour-science/colour/releases) | 2026-08-26 | 70% (medium) | ### security | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | security.scorecard | 4.2 | [link](https://api.securityscorecards.dev/projects/github.com/colour-science/colour) | 2026-08-26 | 90% (high) | | security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=colour-science&per_page=100","last_12m":0,"max_severity":null}` | [link](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=colour-science&per_page=100) | 2026-08-26 | 90% (high) | --- *Source: Vioscale (https://www.vioscale.ai/software/colour-science-for-python). Independent, evidence-based software intelligence. Cite the canonical URI.*