Crafted with by Julibe
Copyright © 2026. All rights reserved.

Results

Compare the original color to the filtered version side-by-side. The goal is to achieve the smallest "Closeness" value. 🖌️

Target Color

Filtered Result (from Black)

CSS Filter Code

This single line of CSS creates the target color from a black base. Copy it and use it anywhere!

filter: invert(0%) sepia(0%) saturate(0%) hue-rotate(0deg) brightness(0%) contrast(0%);

Closeness: 0.0 – perfect match!

The smaller the number, the more accurate the match. This value represents the difference in RGB and HSL components.

The CSS Filter Color Solver

Do you struggle to match a CSS filter to a specific color? This tool is the solution. Just enter your target HEX color, and instantly calculate the optimal CSS filter code needed to transform a black element (like an SVG icon) into that exact color. Stop guessing and start designing with precision!

How the Solver Works

This tool utilizes a computational solver based on Stochastic Perturbation Stochastic Approximation (SPSA), inspired by work from Barrett Sonnta and contributions from MultiplyByZer0. The script rapidly tests millions of filter combinations to find the perfect mix of invert, sepia, saturate, hue-rotate, brightness, and contrast that yields the closest color match to your target. It's built for speed, making complex front-end color transformations simple and precise.

Got Feedback or a New Idea?

I'm Julibe, a freelance designer and developer. I focus on building tools that simplify workflows. If this solver saved you time, or if you have an amazing feature idea, let's connect! Your feedback helps create better digital solutions.

Hexli 🪄 HEX to CSS Filter, in a single click

Hexli 🪄

HEX to CSS Filter, in a single click. No Compromises.

Let’s get one thing straight: an “approximation” of a color is a failure. Hexli is a highly specialized front-end utility built to solve the maddening problem of coloring black SVGs via CSS.

Instead of nudging hue-rotate sliders like a peasant hoping for the best, Hexli weaponizes a sophisticated mathematical algorithm to instantly calculate the precise CSS filter matrix required to perfectly match your target HEX color. It turns you into a god of the DOM, rendering pixel-perfect colors in a single click.

Stop guessing SVG colors! Hexli instantly converts any HEX code into a precise CSS filter, transforming black elements flawlessly in a single click.

The End of Chromatic Compromise

For too long, front-end developers have lived in the dark ages, accepting "close enough" when it comes to coloring external SVG libraries. Seeing a pure `#80ffc0` mint green degraded to a muddy, inaccurate CSS filter is nothing short of visual sacrilege. Hexli is the cure to this madness. It is not just a tool; it is a superpower that bridges the gap between uncompromising design precision and the harsh realities of the DOM. You demand the exact HEX? Hexli forces the browser to bend to your exact chromatic will.

Mathematical Purity at Light Speed

Underneath its dangerously sleek UI lies an engine of pure mathematical obsession. Hexli doesn't guess. It deploys a Stochastic Perturbation Stochastic Approximation (SPSA) algorithm to test, refine, and ruthlessly optimize millions of CSS filter combinations—invert, sepia, saturate, hue-rotate, brightness, contrast. It calculates the microscopic variance between your target RGB and the filter output, delivering a single, copy-paste line of code that perfectly mimics your target. The era of trial and error is over. The era of absolute precision has begun.

If you care about UI design, you know the visceral, physical pain of seeing #427CFE when the brand guidelines clearly demand #427CFF. It keeps you up at night. You import a beautiful, lightweight external SVG icon, and the browser mocks you by rendering it in unchangeable, abyssal black. You can’t touch the fill property. You are trapped.

Enter Hexli.

Hexli is the superpower I built to eradicate this nightmare. I refuse to let CSS dictate my palette. By providing a ruthless, mathematically flawless translation from HEX to CSS filter, Hexli gives you absolute control. It empowers you to implement dynamic themes with the exactitude of a laser, so you can stop wrestling with the browser and start bending it to your will.

To achieve this level of omnipotence, I had to delve into the arcane mathematics shared by developers like Barrett Sonnta and MultiplyByZer0 deep within the StackOverflow archives. Their work on mapping RGB values to CSS filter matrices was the catalyst.

Aesthetically, the dark, hyper-focused UI is inspired by the uncompromising standards of Awwwards and the sheer color discipline of the Pantone Color Institute. It is a shrine to focus.

“Color is the most relative medium in art.” — Josef Albers

“There is a logic of colors, and it is with this alone, and not with the logic of the brain, that the painter should conform.” — Paul Cézanne

“Color is a power which directly influences the soul.” — Wassily Kandinsky

MDN Web Docs: The sacred texts of CSS filter matrices.
Google Fonts (Inter): For the clinical, hyper-legible typography.
Lorem Picsum: For feeding the dynamic background.
Barrett Sonnta & MultiplyByZer0: The architects of the original RGB-to-Filter proofs.

Hexli

HEX to CSS Filter, in a sigle click

#427CFF

Pick a Color

Suggestions

Results

CSS Filter Code

Closeness: 0.0 – perfect match!

The CSS Filter Color Solver

How the Solver Works

Got Feedback or a New Idea?

Hexli 🪄 HEX to CSS Filter, in a single click

Hexli 🪄

HEX to CSS Filter, in a single click. No Compromises.

The End of Chromatic Compromise

Mathematical Purity at Light Speed

[lang]recent-posts[/lang]

Hexli 🪄 HEX to CSS Filter, in a single click

PixelStage 📸 Design the frame · Own the moment

Movieverse 🎬 In a World… One Site, One Page, Comes Alive…

Sidescrolling the Mountain 🏔️ Those Dreamy Pixelscapes

Phantom Protocol 🤖 You were never here

The Pillars 🚀 Behind Crafting Digital Experiences

Max Buffet 🐶 Packaging Redesign

IONIQ 5 🚙 Electric SUV

Celcius ☕ Really Instant Coffee

Celcius 🍎 Sensual Apple for Lovers

Celcius ☕ Morning Coffee for All Days

I’m not Jubilee! Google why is so hard to understand? 😡

Copyright Policy 🖋️

Blog 📰

Cookies Policy 🍪