What It Does
CHR0MA replaces After Effects’ native Hue/Saturation tool with one built on Oklab color science. Standard hue rotation often produces neon, muddy results because RGB color space doesn’t account for how our eyes perceive luminance across different hues. Bright yellow is lighter than bright blue at the same intensity, but RGB treats them equally. Oklab factors this in, delivering more natural color shifts.
Useful for color grading footage where traditional Hue/Saturation creates garish tones or loses contrast when desaturating.
Key Features
Oklab color space. Uses Björn Ottosson’s Oklab, the same perceptual color model now built into Photoshop gradients. Hue shifts respect luminance, so colors stay balanced instead of going radioactive.
Improved layout. Reorganized controls compared to the native effect.
Open source. The code is available on GitHub.
Compatible with After Effects and Premiere Pro back to CC 2017.
Pricing
Pay what you want for individual use (suggested $20). Businesses must pay the suggested amount for a valid license.