I built a theme engine for white-label apps using OKLCH color science
I worked on many apps where each customer needs their own branded theme. The problem is that you can't just shift hue and call it a day. Yellow at 50% lightness looks completely different from blue at 50%. That's why I built this library to generate perceptually uniform themes. Zero dependencies, runs at runtime, outputs CSS vars, Tailwind tokens, SCSS, or JSON. Ships with presets for shadcn/ui and MUI. try it out quickly: npx hextimate "#006677"
I built a theme engine for white-label apps using OKLCH color science launched on April 6, 2026 with 5 votes, #1,846 of 21,248 launches that month and more than 75% of that year's launches.
What it does
Runtime theming for multi-tenant apps.
Swap the brand color, and every shade, scale, and contrast ratio regenerates itself. Configure lightness, chroma, and hue shifts for your palette. Once saved as a preset, any brand color produces a full theme with these same rules Generate themes from the CLI: one command, one color, full output. Ships with llms.txt so AI agents can use it without docs. Every generated foreground meets your minimum contrast ratio against its background. Adapt palettes for color vision deficiencies in one call. Everything you need to go from one brand color to a production-ready theme at build time or on every request. Built on OKLCH. Define a preset once — every color you feed it produces equally balanced…from hextimator.com
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I've been using a version of this internally for a few months but decided to polish it a little to finally deploy it. It's a color system generator that creates accessible, perceptually uniform color palettes using the OKLCH space. It takes one seed (primary) color, generates relative key colors from multiple color harmony schemes (analogous, complementary, etc) that are then used to create 26-step color ramps each. Shades from the ramps are then used to generate semantic color roles, or can be used for creating custom palettes. All colors are gamut-mapped to the sRGB gamut with chroma…
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Color Palette ProNov 2025 · colorpalette.pro · ▲151In 2023, I tried building dynamic color theming by programmatically rotating HSL values. The results weren't good—garish combinations, inconsistent luminosity, completely unusable for UI work. That kicked off a two-year (sporadic) rabbit hole into color theory like Josef Albers' "Interaction of Color," perceptual color spaces (OKLCH vs sRGB), and effects like Bezold-Brücke. I learned that programmatic palette generation is genuinely hard. Nothing beats a trained eye. But I carried on anyway and made the Color Palette Pro. What it does: It generates 6 palette types (analogous, complementary,…
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