---
title: "Harmonizer"
description: "Evil Martians generator that produces color scales with matched perceptual contrast across hues using OKLCH and APCA math."
canonical: "https://vibing.inc/library/harmonizer-vg-0658"
category: "Design Tools & Generators"
subcategory: "Color"
license: "free"
author: "Evil Martians"
source: "https://harmonizer.evilmartians.com/"
---

# Harmonizer
Evil Martians generator that produces color scales with matched perceptual contrast across hues using OKLCH and APCA math.
## Facts
- Source: https://harmonizer.evilmartians.com/
- Category: Design Tools & Generators / Color
- Author: Evil Martians
- Licence: free
- Tags: oklch, apca, color-scale, design-systems
## Why it's a gem
Solves the 'yellow looks wrong at step 500' problem almost nobody else solves.
---
Listed in The Vibeary: https://vibing.inc/library/harmonizer-vg-0658 · JSON: https://vibing.inc/api/public/library/gems/harmonizer-vg-0658