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Light through paper

Gradients as beautiful as OpenAI’s

I’ve always wanted a gradient builder that makes gradients as beautiful as OpenAI’s. The ones on its old plugin cards: soft washes of cornflower and mint, one edge almost in focus, light leaking in from a corner.

For two years I tried to build one from Justin Jay Wang’s methods for random gradients. With Claude models, again and again. Every time: close, and wrong.

Last week I tried again with Fable 5.1. It blew my mind. Every card on this site sits on what came out. Try it.

Seed 42bloom-pink-2Light
Seed
42
Palette
Mood
Shape
<Gradient seed={42} style={{ aspectRatio: "2 / 1" }} />

The trick

Those gradients were never made by code. They were photographs an image model had dreamed from millions of real ones. Fable worked that out and stopped writing generators. Now every request to an image model carries three reference tiles and a paragraph that ends: “An abstract colour-field photograph, not a picture of a thing.” Three hundred and forty came back. A hundred and one were good enough to keep.

Use it

It’s open source: sinbad-io/gradient. One seed, one tile, forever.

import { Gradient } from "gradient";

<Gradient seed="project_42" style={{ aspectRatio: "2 / 1" }} />;

About Oscar Antonio Borlund Orellana

Oscar Antonio Borlund Orellana

I’m engaged to Laura, whom I met at university, and I’m the father of Elias, our wonderful son. We live in an old, renovated apartment in Copenhagen.

Laura is my foundation. She makes it possible for me to set out on journeys as crazy as building companies, and she is the reason I’m not afraid to fail, get back up and try again.

I come from a family of builders. Since I was little, I’ve watched my dad build Origo, and I learned early that the things you wish existed are yours to make. I want to leave the world a little better than I found it.

Work

Work

  • Jun 2026 – NowFounder
  • Jan 2026 – Jun 2026Engineering Manager
  • Oct 2024 – Dec 2025Product
  • Sep 2023 – Sep 2024Senior Software Engineer
  • Jan 2021 – Aug 2023Founder & CEO
  • Sep 2018 – Jan 2023BSc and MSc Computer Science

Stealth, Founder, Jun 2026 – Now

FounderJun 2026 – NowStealth
  • Founder
  • Research
  • Infrastructure

Every so often a problem grabs you and won’t let go. This one is big enough to scare me and still unsolved, so I left Legora to build it. We are in stealth, backed by some of the best people in the world.

Legora, Engineering Manager, Jan 2026 – Jun 2026

Engineering ManagerJan 2026 – Jun 2026
  • Infrastructure
  • Platform
  • Leadership

I led and built the Infra and Foundations teams at Legora: backend, compute and platform, the foundation the company scales on.

Beyond Work, Product, Oct 2024 – Dec 2025

ProductOct 2024 – Dec 2025
  • Product
  • Generative AI
  • Backend

I led product from zero and built the infrastructure and backend behind it, deploying generative AI against the hardest problems in the enterprise.

Corti, Senior Software Engineer, Sep 2023 – Sep 2024

Senior Software EngineerSep 2023 – Sep 2024
  • Kubernetes
  • Go
  • Azure
  • Linkerd

I architected and implemented Corti’s multi-tenant Kubernetes platform on Azure, with Go services for automation and a custom Linkerd proxy layer that distributes traffic between tenants.

Rig.dev, Founder & CEO, Jan 2021 – Aug 2023

Founder & CEOJan 2021 – Aug 2023
  • Founder
  • Open source
  • Go
  • Kubernetes

I wrote the first lines of Rig.dev in my dorm room at 23. We raised €2.2M in venture funding, and I led the team that built the open-source application platform for Kubernetes in Go: SDKs, a web console, CLI tools and authentication modules.

Aarhus University, BSc and MSc Computer Science, Sep 2018 – Jan 2023

BSc and MSc Computer ScienceSep 2018 – Jan 2023Aarhus University
  • Cryptography
  • Algorithms
  • Machine learning
  • Distributed systems

A bachelor’s in machine learning, distributed systems and cryptography, then a master’s in cryptography, algorithms and machine learning, with the Grundfos Award for Best Startup along the way. I paused the master’s to build Rig.dev.