color-toolkit Connector for AI agents.
3 live capabilities
Generate mathematically accurate CSS palettes and UI colors for your design system.
Waiting for input…
Why people use color-toolkit
Fix CSS Color Hallucinations with Deterministic Color Engine
This Connector changes that by replacing guesswork with real math. When you ask your agent to adjust a color, it uses a deterministic engine to calculate the exact luminance change. You get the right hex code the first time, so you can keep moving without checking your work.
What Vinkius changes
Your AI stops guessing and starts calculating your UI colors.
Use it from Claude, ChatGPT, Cursor or another AI client you already have.
One account · 5,900+ Connectors
- Real-world use case 01
Fixing inconsistent button states
The AI kept giving me slightly different shades of blue for buttons.
- Real-world use case 02
Quickly building a landing page palette
I needed a quick palette for a new landing page section.
- Real-world use case 03
Standardizing a messy codebase
My agent was mixing up RGB and HEX in the Tailwind config.
Complete set · 3capabilities
The complete color-toolkit capability set.
These are the exact actions your AI can choose when you ask it to work with color-toolkit.
01—03
3 capabilities in this set.
Part of 3 available through color-toolkit.
- 01 Capability
Manipulate luminance
Lightens or darkens a color by a specific percentage to create states like hover or active. This ensures your UI elements have consistent visual depth.
- 02 Capability
Convert color
Switches any CSS color between HEX, RGB, and HSL formats instantly. Use this to keep your codebase uniform regardless of your preferred input.
- 03 Capability
Generate color palette
Creates a mathematical set of analogous or complementary colors from a primary seed. This is perfect for building out full brand palettes.
Set up in minutes
One URL. Then ask color-toolkit to work.
Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use color-toolkit from the conversation.
Choose your client
Live previewAdvanced clients IDE · CLI
Claude · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_PEeGIgtA2fTZ16SsuzO4v3Rh5uk8KdzB2YxabLIM/mcp - Step 01
Open Connectors
In Claude Web or Claude Desktop, open Settings and choose Connectors.
- Step 02
Add the URL
Choose Add custom connector, name it color-toolkit, and paste the URL above.
- Step 03
Turn it on in chat
Select +, open Connectors, and enable color-toolkit for the conversation.
ChatGPT · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_PEeGIgtA2fTZ16SsuzO4v3Rh5uk8KdzB2YxabLIM/mcp - Step 01
Open MCP settings
On desktop, open Settings and MCP servers. On web, open your workspace app or connector settings.
- Step 02
Add the URL
Choose Add server with Streamable HTTP, or create a custom MCP app, then paste the color-toolkit URL.
- Step 03
Save and start
Save the connection and enable color-toolkit in your conversation. Desktop may ask you to restart once.
Cursor · IDE configuration
Advanced setup
{
"mcpServers": {
"deterministic-color-engine": {
"url": "https://edge.vinkius.com/vk_preview_PEeGIgtA2fTZ16SsuzO4v3Rh5uk8KdzB2YxabLIM/mcp"
}
}
} - Step 01
Open MCP Settings
Press Cmd+Shift+P (macOS) or Ctrl+Shift+P (Windows/Linux) → search "MCP Settings"
- Step 02
Add the server config
Paste the JSON configuration above into the mcp.json file that opens
- Step 03
Save the file
Cursor will automatically detect the new Connector
- Step 04
Start using color-toolkit
Open Agent mode in chat and ask: "Using color-toolkit, help me...". 3 tools available
VS Code Copilot · IDE configuration
Advanced setup
{
"mcpServers": {
"deterministic-color-engine": {
"url": "https://edge.vinkius.com/vk_preview_PEeGIgtA2fTZ16SsuzO4v3Rh5uk8KdzB2YxabLIM/mcp"
}
}
} - Step 01
Create MCP config
Create a .vscode/mcp.json file in your project root
- Step 02
Add the server config
Paste the JSON configuration above
- Step 03
Enable Agent mode
Open GitHub Copilot Chat and switch to Agent mode using the dropdown
- Step 04
Start using color-toolkit
Ask Copilot: "Using color-toolkit, help me...". 3 tools available
Windsurf · IDE configuration
Advanced setup
{
"mcpServers": {
"deterministic-color-engine": {
"url": "https://edge.vinkius.com/vk_preview_PEeGIgtA2fTZ16SsuzO4v3Rh5uk8KdzB2YxabLIM/mcp"
}
}
} - Step 01
Open MCP Settings
Go to Settings → MCP Configuration or press Cmd+Shift+P and search "MCP"
- Step 02
Add the server
Paste the JSON configuration above into mcp_config.json
- Step 03
Save and reload
Windsurf will detect the new server automatically
- Step 04
Start using color-toolkit
Open Cascade and ask: "Using color-toolkit, help me...". 3 tools available
Cline · IDE configuration
Advanced setup
{
"mcpServers": {
"deterministic-color-engine": {
"url": "https://edge.vinkius.com/vk_preview_PEeGIgtA2fTZ16SsuzO4v3Rh5uk8KdzB2YxabLIM/mcp"
}
}
} - Step 01
Open Cline MCP Settings
Click the Connectors icon in the Cline sidebar panel
- Step 02
Add remote server
Click "Add Connector" and paste the configuration above
- Step 03
Enable the server
Toggle the server switch to ON
- Step 04
Start using color-toolkit
Ask Cline: "Using color-toolkit, help me...". 3 tools available
Claude Code · Terminal command
Advanced setup
claude mcp add deterministic-color-engine --transport http "https://edge.vinkius.com/vk_preview_PEeGIgtA2fTZ16SsuzO4v3Rh5uk8KdzB2YxabLIM/mcp" - Step 01
Install Claude Code
Run npm install -g @anthropic-ai/claude-code if not already installed
- Step 02
Add the Connector
Run the command above in your terminal
- Step 03
Verify the connection
Run claude mcp to list connected servers, or type /mcp inside a session
- Step 04
Start using color-toolkit
Ask Claude: "Using color-toolkit, show me...". 3 tools are ready
Where the request belongs
Work color-toolkit can move forward.
This is for the frontend developer who's tired of manually fixing broken CSS colors or the UI designer who needs to keep a brand's identity perfectly consistent across dozens of pages.
Frontend Developer
They use this to generate accurate CSS variables and Tailwind classes without manually checking every hex code.
UI Designer
They use it to quickly spin up color schemes for new components while staying true to the brand's primary colors.
Design Systems Engineer
They use it to automate the creation of hover states and active states for large-scale component libraries.
Build the capability set
Add more capabilities.
Each Connector adds new actions and data without changing how you work.
Browse ConnectorsColor Conversion Engine
Stop LLMs from hallucinating hex codes. Deterministically convert colors between RGB, HEX, CMYK, and HSL using pure mathematics.
Color Converter Engine
Convert any color between HEX, RGB, HSL, and CMYK with mathematical precision. The AI guesses color codes. this engine knows them.
Color Contrast Checker
Instantly verify if your text is readable on any background. WCAG 2.1 AA/AAA compliance in one call. the AI guesses ratios, this engine calculates them.
Palette Generator
Generate perceptually uniform color palettes using OKLCH space and WCAG accessibility standards.
Color Format Converter
Convert between HEX, RGB(A), HSL(A), HSV, and CMYK with precision.
Color Space Converter
High-precision mathematical conversion between RGB, HSL, CMYK, LAB, OKLAB, and more.
Bring your own AI
Change the model, client or framework. Keep color-toolkit connected.
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Claude -
ChatGPT -
Gemini -
Cursor -
VS Code -
Windsurf -
ZCode -
Cline -
Zed -
Continue -
Kiro -
Roo Code -
Zencoder -
Goose -
Void -
Augment Code -
Amp -
Qodo -
Tabnine -
Pieces -
Sourcegraph Cody -
JetBrains -
Warp -
Amazon Q -
Antigravity -
BoltAI -
Raycast -
Jan -
LM Studio -
AnythingLLM -
Open WebUI -
Msty -
Cherry Studio -
LibreChat -
TypingMind -
Chorus -
5ire -
n8n -
LangChain -
LlamaIndex -
CrewAI -
Vercel AI SDK
Before you connect
Questions about color-toolkit.
The practical details behind the request, access and result.
How does the Deterministic Color Engine help with my CSS?
It stops your AI from guessing hex codes. Instead of the AI making up a color that looks "darker," it uses math to provide the exact hex value you need for things like hover states or dark mode.
Can I use the Deterministic Color Engine for my brand colors?
Yes, it's perfect for that. You can give it your primary brand hex and have it generate entire palettes of complementary or analogous colors that stay perfectly in line with your brand identity.
Will the Deterministic Color Engine work with Tailwind CSS?
Absolutely. Since it outputs standard hex, RGB, and HSL codes, you can easily plug those values into your Tailwind configuration or any other CSS framework you're using.
Does the Deterministic Color Engine handle different color formats?
Yes, it can convert between HEX, RGB, and HSL formats instantly. This means your agent can work with whatever format your specific capabilities or design systems require.
Is the Deterministic Color Engine good for creating dark mode?
It's a great way to do it. You can systematically darken your entire primary color palette to create a cohesive and mathematically accurate dark mode for your app.
Why should I use this instead of just asking my AI to pick a color?
Because standard AI models often hallucinate. They don't actually "know" color math; they're just predicting the next character. This Connector forces the agent to use real calculations, ensuring your UI looks professional.
Why use an Connector for basic color conversion?
While AI models can sometimes guess standard conversions, they fail consistently when computing HSL luminance shifts (like creating a 10-step Tailwind color scale). An algorithmic engine guarantees zero error margins.
How does the palette generation work?
It converts the base color into HSL format and shifts the Hue degree. Complementary shifts by 180 degrees, while Analogous generates a harmonic palette by shifting -30 and +30 degrees.
Are there any external dependencies to run this capability?
Absolutely none. The color engine is built from scratch utilizing pure Javascript bitwise operators and math algorithms, providing zero-latency execution without external bloated libraries.
Why use an MCP for basic color conversion?
While AI models can sometimes guess standard conversions, they fail consistently when computing HSL luminance shifts (like creating a 10-step Tailwind color scale). An algorithmic engine guarantees zero error margins.
One connection away
Give your agent a direct line to color-toolkit.
Connect color-toolkit once. Keep it beside 5,900+ managed Connectors when the next task needs more.
Explore every Connector No credit card required · Free tier available