Color Expander

Color Expander | Online Free Tool | Elysia Tools

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category: Design
Input types: textarea, select, checkbox
Output type: text
Sample coverage: 4
API ready: Yes

Overview

The Color Expander is a specialized utility designed to instantly convert shorthand 3-digit HEX color codes into their standard 6-digit counterparts, ensuring consistency across your CSS and design projects.

When to use

When you need to standardize a mix of 3-digit and 6-digit HEX codes in your CSS files.
When preparing color palettes for web development that require full 6-digit hexadecimal notation.
When cleaning up legacy codebases that use shorthand color definitions.

How it works

1Paste your list of HEX color codes into the input area, with one color per line.
2Select your preferred output format, such as uppercase, lowercase, or CSS-ready syntax.
3Toggle the inclusion of already 6-digit colors if you wish to process your entire list at once.
4Click the convert button to generate your standardized list of 6-digit HEX codes.

Use cases

Standardizing design tokens for a cross-platform UI library.
Refactoring CSS stylesheets to meet strict coding style guidelines.
Converting legacy shorthand color values for modern web applications.

Examples

1. Standardizing CSS Variables

Frontend Developer

Background

A project contains a mix of shorthand and full HEX codes in a global CSS variables file, causing inconsistencies.

Problem

Need to convert all shorthand codes to 6-digit format to maintain a uniform codebase.

How to use

Paste the list of variables into the tool and select 'CSS format'.

Format: CSS format, Include already 6-digit colors: Checked

Outcome

All colors are converted to a consistent 6-digit format, ready to be pasted back into the CSS file.

2. Cleaning Design System Assets

UI Designer

Background

Exported color palettes from a design tool often include a mix of 3-digit and 6-digit HEX values.

Problem

The development team requires all colors to be in 6-digit uppercase format for documentation.

How to use

Input the raw color list and select 'uppercase' output.

FAQ

Does this tool support colors without the hash symbol?

Yes, the tool accepts both formats and will normalize them based on your chosen output settings.

Can I process multiple colors at once?

Yes, simply paste your list of colors into the input field with each code on a new line.

What happens to colors that are already 6 digits long?

You can choose to include them in the output or filter them out using the 'Include already 6-digit colors' checkbox.

Is the output compatible with CSS?

Yes, you can select the 'CSS format' option to ensure the output is ready for direct use in your stylesheets.

Does this tool change the actual color values?

No, it only expands the shorthand notation (e.g., #F00) to the full notation (#FF0000), keeping the color identical.

Format: uppercase, Include already 6-digit colors: Checked

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Inputs

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Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Standardizing CSS Variables

2. Cleaning Design System Assets

FAQ

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