Kiunrhong

Experimental wide gamut color picker, written in AppKit. The app utilizes various overkill features such as Metal-backed HDR color spectrum, OKLCH support, and possibly experimental Rec.2020 color conversion (not yet implemented).

Naming

虹 (kīung, rainbow)、共樣 (kīung rhōng, the same) as in Taiwanese Hakka.

References

• W3C CSS Color Module Level 4 Specification
• Björn Ottosson’s various articles on Oklab and Okhsv
• The coloraide color space information and reference from Issac Muse

License

© Poren Chiang 2025. Released as free software under the GNU GPL 3.0 Public License.