Color matching should make more sense.
Color Logic is building a more structured way to understand foundation shades — starting with lightness, hue bias, and the needs of olive and difficult-to-match skin tones.
Why Color Logic exists
Foundation shade labels are not a universal language.
One brand's “neutral” may look golden in another. “Olive” can describe very different colours, while terms such as fair, light, medium, warm and cool often have no consistent boundary across brands.
For people whose skin sits between conventional categories, finding a foundation match can become a process of trial, error and translation.
Color Logic was created to make that information easier to understand and compare.
Founder story
It started with a drawer full of almost-right foundations.
Color Logic was founded in Hong Kong by Tasha, a personal color analyst certified through the Japan Personal Color Association (JPCA).
For years, I rarely finished a bottle of foundation.
I would buy a shade that seemed right, wear it a few times, realise that something was off, and eventually move on to another one. The result was a growing collection of almost-right foundations — and a lot of wasted product and money.
Getting matched at beauty counters did not always solve the problem either. Sometimes the intention was to make my complexion look healthier or more rosy, so I was matched to cooler, pinker shades. On my skin, the result could be a rosy face that looked visibly disconnected from my neck and body.
The turning point came when I stopped asking only whether my skin was “warm”, “cool” or “neutral” and started understanding it more precisely through lightness, hue direction and the behaviour of olive tones.
Once I understood my own skin tone better, buying foundation became much more predictable.
That experience made a larger problem visible: people are not necessarily bad at choosing foundation. The information available to them is often vague, inconsistent, or based on categories that are too broad.
What began as a personal attempt to understand my own foundation matches gradually became Color Logic — a larger research and product project around lightness, hue, olive tones and cross-brand shade comparison.
Color Logic itself has also been built independently. I taught myself the development skills needed to turn the research, spreadsheets and classification logic into a working web product.
The system
Separate the variables before trying to match them.
Traditional undertone labels often combine several different characteristics into one word.
Color Logic separates some of those characteristics so they can be compared more clearly.
Lightness
How light or deep a shade appears.
Hue Bias
The visible colour direction of a shade — from rosy and neutral through yellow, yellow-olive and olive.
Product Attributes
Coverage, finish, texture and skin type, organised alongside the shade data.
The goal is not to create another beauty label.
It is to create a clearer structure for comparing foundation shades across brands.
Why start with olive?
Olive skin makes the cracks in the system easier to see.
Olive skin can expose many of the weaknesses in conventional foundation classification.
It may appear yellow, green, muted, neutral or even slightly rosy depending on lightness, surface redness and surrounding colours.
A shade labelled “warm” can turn orange.
A “cool” shade can look pink.
A standard neutral can still feel visibly wrong.
That makes olive and difficult-to-match skin tones a useful starting point for building a more precise way of thinking about foundation colour.
Color Logic is olive-focused, but the underlying problem is larger than olive skin.
The long-term goal is to build a framework that makes shade matching and comparison more precise across a wider range of skin tones.
What Color Logic is building
The database is the starting point, not the finished system.
The current Color Logic Foundation Database is an early beta.
It brings foundation shade information from different brands into a shared, searchable structure so users can compare shades by more than a marketing undertone label.
Over time, Color Logic will expand into tools for shade comparison, visualisation and foundation matching.
Explore the system
Start exploring Color Logic.
Explore the foundation database, or join Early Access and tell me what makes foundation matching difficult for you.